Then I guess my home button will experience less usage too since I intend to enable the multitasking gestures. Five finger pinch will bring me back to the home screen, and I feel like that'll be more convenient since I'm already using the touch screen.
yep...exactly. i've got multi-gestures enabled (i can't believe that apple doesn't have this enabled by default) and my fingers never have to go near the home button ever again.