I picked up a pair of Astral TR1 Merge shoes/boots last fall. Did about 6 days worth of canyons in them - all dry ones and fairly squeezy and involving some stemming. The sole of the left shoe was basically falling apart at that point (see photos). I'm not sure if my experience is typical - I'm heavier than most (200 lbs before clothes & gear) so I put more stress on shoes. OTOH I was able to use a set of 5.10 Savants and 5.10 Canyoneer 3's for quiiiite a bit longer than that with no problems, so I tend to think it's either the shoe design or a defective sample. Other than the durability, they seem to be pretty OK shoes. Traction on dry rock was pretty good, though not as good as 5.10's IMO. The soles are a little on the thin side, but good enough. I did some pretty solid hikes in them with minimal problems, including a 9.5 mile on-trail walk yesterday after a liberal application of Shoe Goo.