I hate the sponginess of multiple grips and so only use one. I prefer a thicker handle though because it gives me more control, so either have to get creative with them myself to get the feel I want (eg. medical tape, extra binding etc) or buy with a thick handle (eg. Aldred). Either way, I never have more than a single grip.
I don't use inners of any kind, and if I am in long enough then I would rather call for my other gloves. I like to be able to feel as much of the contact of ball on bat, extra grips and inners etc take that away for me.