I haven't been able to handle one of these yet. Any thoughts on the pressure needed to trip that pushbutton cylinder latch? I'm sure I can manage it, but my wife has some arthritis in her thumbs and says she can't manage the similar-looking release on the Ruger DA revolvers. She can manage the S&Ws, even the old flat latch, if she must, but she prefers the pull action of her Colt Agent. Also, any comments on the double-action pull? The magazine reviews I've read mentioned there wasn't much stacking, which is my pet peeve with Colts, but I'd like to hear from somebody else before I go traipsing all over looking for one to try.