I've shot a lot of passthroughs with mechanicals. In fact most of the 30 to 40 deer I've killed with them, but IMHO you will have more consistent passthroughs on game with a fixed blade Broadhead.
To each there own!
I've walked both paths and even though the mechanicals are tempting. I canNOT take the chance. I'll stick with my tried and true.

One thing to remember. Whether you shoot a 1" cut, a 1 1/4" cut or a 2" cut, a Bad shot will always be a Bad shot. I think that's been proven many times on this board alone.

Dan