I like the grips okay with the flat insert with lanyard hole on the FNX, and I like the safety. I also like the ambidextrous controls.
I really like my Five-seveNs also, but I like the feel of the FNX better.
You will really enjoy the FNP.
Only change I would make is offer them all with 5.5 to 6" barrels with full-length slides.