Aside from the "cool" factor, what is it that folks would use these guns for? I think they only hold 6 to 8 rounds of 45 Colt no? So no good for SASS matches as a main match gun. Also, even if you could have a 10 round mag capacity, the having to lever then cock the hammer to fire would sure slow you down (I believe I have the right gun).
The gun might prove interesting the the side matches like the long range rifle match, where accuracy is the key without speed being a factor.