I pick differently too, here's some pics:


Ibanez RGA121 | ESP LTD H-1000
Axe-FX Standard
for me,when i strum,i personally find that using both my index and middle finger to support one side and my thumb on the other more comfortable...

i guess its up to personal preference,and if it doesn't bother you,it wont matter much...

EDIT:i normally just use my index and thumb for lead and stuffs like that...much like the picture up there^
I find the more I play and work on tonality I switch up my hand stance all the time, everything produced a different sound, so sometimes its best to play with it, find a new way, change up your pick attack to the tone that you need at that moment.