Go for it, Sharp are further ahead of the game than most companies allowing 3rd party software to work and even the features on them are miles ahead without any software.
All you have to do once PaperCut is working is copy 2 web links to the copier and away you go. Papercut or PCounter works really well and you can use card readers if you want to swipe in.
Any questions ask away.
Do you deal directly with Sharp or via a third party? Whats the support like for repairs etc?
We currently get support from papercut through a third party and are considering going direct to sharp.