I've ran it a few times like Cary said. Just in some small Pin Oaks, so no real need to clip into anything to ascend or whatever. I just got my second Pinto in today to start playing around with it, I really like the idea and think it has promise. I like the fact that the RW faces away from you, less likely to bash something in with it while tending slack. Also like the sleek look to the Pinto.
Calling for rain tomorrow, so hopefully I'll get time to play around with different set ups and tweak some things to see how it works out. As far as ascents, I don't see it giving me too much trouble. I rock the DMM thimble set up on mine. The way I see it, if I hook into a handle ascender it should work just fine, and if I want to clip my lanyard into it, I could clip directly to the biner with the pinto on it, or the thimble. The only thing there is the RW would twist to face u, which I don't see being a big deal during ascent. With a correct tether length, nothing should bind up.