If you are specifically asking about the Solo Scout, the one that straps to the tree, I cannot comment. But if you are asking about the Scout attached to a climbing stick, I use one often. I have a slanted Scout mounted to a Hawk Mini and a straight Scout on a Beast stick. Both are excellent and Matt builds a great product. I also have a Ridge Runner Platform. Since acquiring the Scouts, I use the Ridge Runner less.
The Scouts are excellent for shorter hunts, and I can see using one for a long hunt if trying to stay minimalist. I like the Ridge Runner too, but only use it for specific hunts. I have grown to like just packing the single stick with the mini platform. I find both Scouts are comfortable. The angled Scout is probably the most comfortable if you mostly lean, which I do. You can still sit, but the straight version may be a little better for sitting. I actually find both to work well. When using the straight one, I reposition my feet a little more often to change pressure. On shorter hunts 2-4 hours I have had no issues or foot pain. But some people may be more sensitive. For perspective, I am 6’2” ~240lbs and wear a size 13 shoe. I have put a lot of sits (or leans) on the Scouts. Obviously the Ridge Runner is a lot roomier. I agree the weak side shot may be a little more challenging to get on, but it’s doable. If you are looking for one of the most compact options, it is hard to beat the Scout.