I bought this harness to use at the gym and for outdoor sport climbing. I haven't had a chance to use it for big wall stuff yet. It is rather comfortable once you adjust it properly and it's easy on you when you take big falls leading. I cannot comment on long-term durability just yet (it's been a few months), but it seems very well constructed throughout.
This review was written in the old system and had content requirements that are different than reviews written today.