I've had the Pop Up 38 for a couple years now, used it exclusively in Wisconsin and 95% of the time I'm on public. I use this pack the whole season and for everything from a short evening sit after work when I can swing it to the all day sits in November. Here's my not-so-brief thoughts.
1. I'm not a small guy, 6' even and 270-280lb depending on how much cake I run into during the week. Finding a pack that was adjustable and comfortable was priority number 1 and this thing absolutely fits the bill. Yes, it's a framed pack and is thus slightly heavier than an unframed one, (duh). But, I'm a former weightlifter, so adding a bit of weight doesn't phase me. Managing my sweating on the way in is 100% dependent on how I'm dressed. For a framed pack this thing is comfortable, feels very secure, and is lighter than other framed options out there.
2. I'm also both an overplanner and an overpacker. I always carry a full backcountry first aid kit, even if I'm 100yds from the truck (blow your knee out a few times and let me know how easy you think walking is after), and I'm always worried about needing something and not having it. This pack is big enough to cover all my daily items (first aid, knives, flashlights, etc), all my layers (usually at least a vest, rain/snow kit, and in late season a full Sanctuary 2.0 system in size double sex L), food/water/coffee (spoiler alert: big guy eats a lot), and my sticks and platform. But, it's also super comfortable to wear and the waist strap does a great job distributing the weight to the hips, so packing's easy. For that reason I also like the 38 over the 28, I can always sinch down empty space, but I can't add more if I need it.
3. Storing gear in this thing is awesome. I use the top two zipper pouches on the main flap to store items I use regularly, making getting to things extremely simple. The water bottle holders are big, quiet, and secure. I also store my platform (Predator XL) directly in the front pouch (it fits perfectly) and used to carry my climbing sticks in the meat pouch. I'm switching to a one stick setup this year, but I used to carry 3 full 30" Muddy doublestep sticks and loved how I could extend the handle and secure the pack around the sticks. I like to walk with my hands free and use a walking stick (again, knees...), so the fact that the pack has so much available storage options makes it awesome for how I want to use it.
4. I usually throw my bow up top for walks in, helps keep my hands free. I've found that if I slip my front stabilizer under my chest strap the bow sits perfectly on the top of the pack. Probably more about my own setup, but it's a big perk for me.
5. This thing is durable as all hell and machine washes great. I clean this thing before season and usually once during season as well, never had an issue from anything in the field or from putting it through the washer. Plus, the clips make detaching the frame bars easy, so isolating just the pack portion for the washer is no problem, takes me longer to remove and add back all my crap to the pockets.
6. Speaking of durability, this thing seems incredibly well made. I have noticed ZERO signs of tearing, frayed stitching, or other issues in 3 full seasons of use. The thing damn near still looks new, and that's not because I baby it or only walk across open corn fields. It's had plenty of sticks, thorns, and other crap tearing across it, but it still looks great. The handles are also INCREDIBLY secure, pulling this up I've never worried once about it giving out.
Okay, time for the few downsides:
- It's not 100% quiet. The frame bars, when you have something strapped into the meat pack, can make a little noise. It's certainly not more than your own foot hitting the ground while walking, but for a spot and stalk I could see it being an issue if you want to still wear your pack. I'm about as covert and graceful stalking as a drunk hippo, so it's never been a a problem for me.
- The fabric is also not the quietest, but that's a trade off of the durability. It's pretty water resistant and as I mentioned above super durable, so you should know what you get with that.
- It does take a bit more time to secure loads than a regular pack. But, again, that's a function of the pack's versatility. I've personally never had an issue with things moving around too much, but I'm also someone who plans well and gets in before a lot of other people are even up. Taking an extra 5 minutes to pack and secure is something I would much rather do, not trying to set any speed records.
- I find it too big to store in front of me in the tree. However, I also like to stand on my platform quite a bit, especially for all day sits, so it doesn't bother me, but if you like to do that just know that going in. I just put it to one side, never had an issue with it being in the way or anything.
- Yeah, it's a bit more expensive than some packs. But, again, the functionality is great. Like anything else you get what you pay for.
Eventually when life allows (kids, work, $'s, the usual delays) I plan to use this pack out West as a day pack and I have zero doubts about it being able to hold up for that. It would probably do well as an overnight pack, but any more and you're probably pushing the capacity. But, I love knowing that all season I've got one pack to deal with. I have a small waist pack for squirrel hunting, this thing for everything up to an overnight, and a full 60L for my hiking trips I've taken. This thing has been great and I'd highly encourage other people to take a look.