There's no such thing as "too aggressive" when your hands are dripping wet with sweat and/or greasy. I like maintaining my grip on my gun. I don't know where you live, but where I live in Texas, guns with less secure gripping surfaces have moved enough in my hands during recoil to make it necessary to adjust my grip. That's not something I want to do in a gunfight.
To this day I'm still not sure what the .40 S&W does that's so magical that a 9MM won't do something equivalent with quality ammunition. The 9MM ammunition of the late 70's and early 80's is not the same stuff that we use today. That said, if you have to have a fotie, knock yourself out.