One thing to consider that didn't pop out right away: if you are a dump pouch user, the killdeer with the mini drey may not be an optimal setup, depending on how you set it up. The killdeer harness is next to your body with the dump pouches attached to the harness/belt. The mini drey is designed to go outside of/over the top of the harness. Going to be a bit awkward, unless your dump pouches are empty. ? You could position the mini drey underneath the dump pouches, which would work well, except that you can't exactly use it like a hammock then?
Update:
Dryad Killdeer: The belt works well, waist buckle works well. Dump pouches attach nicely. Waist adjustment works well. The premium leg straps are 'nicer' than the g-hook style but are not comfortable at all if bearing any sort of significant body weight in just the belt and leg straps configuration. Adding in the hammock increased comfort in this mode. The leg straps are a bit short/snug when I put on my bibs and normal cold weather gear. A bit of fiddle factor involved with putting on the leg straps and then using the leg strap keepers, results in some farting around, not as clean to put on. The mini hammock saddle works well and is very comfortable. If the mini drey hammock is positioned under your dump pouches, then it works well and is comfortable, but you are somewhat limited in that you can't pull the hammock all the way up into "hammock" mode. If you put the mini hammock over your dump pouches, and there is anything inside your dump pouches, it compresses these against your body and is NOT very comfortable.
TX5 Minimalist 2.0
I really wanted to make this work. Nice craftsmanship. Lightweight. The problem, for me, was that it was not comfortable - the lower webbing sat RIGHT on my outer leg / hip bones. (For an exact location, all of the pressure was on my "grater trochanter of femur".) When I went into leaning or sitting mode, the pressure on this part of my hip area was a significant problem; it was almost like all of my weight was resting on 1.5" webbing in only those two spots. Tried to make it work with several different combinations of tether height and length. Just could not get comfortable. Was almost in denial for several days since I wanted it to work in my hybrid system. Tried it out, sat for 5 minutes, not comfortable. Made a bunch of excuses, tried it another couple of days, same results. Had to laugh at myself. Ended up returning it. TX5 was great to work with and very responsive, kind of bummed it didn't work. Similar to the dryad killeer, the TX5 minimalist was not comfortable in just the belt and leg straps configuration - deploying the mesh saddle/seat improved the comfort, but the position of the lower webbing ruined it due to the pressure points, as noted above. Leg straps were longer than those provided with the killdeer. Had leg strap keepers built in, which was kind of nice, but also a bit of fiddle factor if one tried to leave them attached to the leg straps. Probably best to reconfigure each time, which is kind of annoying.