Oh yes, picks and flats go so well together.
I think what is most important is to find the right pick for you. I used to play mostly fingers, and for picking I used some large triangle type picks.
I recently found this one:
Tortex Sharp 1.5mm, has plenty of space to hold on to, and the sharp tip gives me lots of control. Easy to skip strings and for up/downstrokes. The triangle ones always felt a bit clumsy, and regular guitar picks too small. This one works perfect. I play more pick now
It's really about finding the right pick ime.