I used to EDC a P1D and found it to be about all I wanted to carry on a daily basis. I have both a P1D and a P2D and, yes, the difference is noticeable. OTOH, I'm carrying my Novatac today and it seems huge by comparison to either of those Fenix lights.
Bottom line is that if you find your EDC light to be even slightly bigger than you'd like, you're less likely to pick it up every morning. Most days I have to wear dress clothes, so a Raw NS is all I'm willing to carry.
Buy all kinds of different sizes and shapes -- then decide what works best for each situation.