In reply to ashley1_scott: Obi Wan once thought as you do, you don't know the power of the dark... Er, gravity...
Ahem. One day your partner may have a fall above gear on an overhanging climb where there isn't any appreciable rope drag and if you are a fair bit lighter THEN you will realise that weight can be a pretty major factor, it just takes the right conditions to expose it.
Being a heafty chap and occasional faller from above gear, I have pulled some belayers quite far in my time.
To the op:
ATC-XP should be fine really, might not be the grippiest possible device but really learning using a standard device and not getting surprised later when you borrow someone elses is probably a better option. Holding the rope will not be as much of a problem as staying on the ground I think.