I personally love em, though they are not perfect... Design flaws I see (that don't outweigh the fact that they are comfortably stored when converted)
1. I have recently converted to using mostly a hip pack, and turning it around my waist has a tendency to undo the Velcro
2. The front pocket is pretty small (though I guess it has to be to keep them not feeling bunchy when converted down), and is not accessible when they're converted down, which stinks if you like to keep a camera, etc. in there
3. I would like to be able to sit down in them without the Velcro coming undone... Maybe just need to get used to loosening the straps first
Again, I love these, and I'm someone who's never really totally satisfied with my gear (this coming from a guy who posted on here that I'd like to get rid of my Sage 599 after one season to go down just one size to a 499).
I would put some on in the store and walk, sit, move around, maybe even put on a pack in the store and go through the motions that you particularly go through on the water.
Nothing, it seems, is ever perfect for everyone... There are tradeoffs to be considered with every purchase (unless one is an impulse buyer). I recommended these to a buddy from Denver who was looking to invest in a solid pair for the first time, and another buddy of his talked him out of em...
We went fishing the other weekend and were both happy in our waders. I wish mine had his hand warmers and he's pretty sure if it gets hot enough to convert down then he'll just wet-wade (Maybe if I still lived in CO and was still used to the cold instead of living in TX, I'd feel the same way? Probably not, I fish a lot more than he does...)
Hope this helped and didn't add to the confusion