Having to push a plunger in front that runs parallel to the barrel to cock it, well... let's just say I see some fingertips getting, er, 'damaged' here and there.
I agree - seems to be more of a curiosity than an improvement Like the double-barreled .45 autos we’ve seen recently, I don’t see an advantage in functionality or in compactness. Plus there is the obvious fingertip riskiness you pointed out.