I have handled them at Cimarron, but have not shot one. Actually have never seen anyone shooting one. Feels pretty smooth out of the box and nice-looking. I have heard of some folks having problems with them, although I do not recall exactly what. I think it is for those who want something different, not really for shooting fast.
Most of them that Uberti has made have been in 45LC, although they have made a few in 44-40, which is what all the originals were chambered for.