I also play on a PC with Keyboard/mouse and a Razer Nostromo

keyboard or mouse on my right hand and Razer on the left hand

i have my keybinds setup so that the skill slots are access though numbers 1 to 9, - and =.
bar 1 i access by pressing the directly on the slot
bar 2 i have to press the Ctrl buttion then the slot number (eg crtl+1)
bar 3 i have to press the alt buttion then slot number (eg Alt+1)
Pet bar Crtl+Alt

on the razer on my thumb i have Alt bound and look around bound on the thumb stick
on my little finger i have Crlt bound

my 3 main fingers i have movement bound in the following way

strife left, forward, strife right
move left, back, move right