I was wondering if it'll be allowed to use povohat's accel driver at quake LANs on in leagues/tournaments?

I'm kinda torn right now if I should use povohat's accel or just deal with the currently terrible in-game accel.
I don't want to get used to something I might not be allowed to use in the long run.

And does anyone happen to know if anyone competing in the QWC qualifiers uses povohat's?
Any well known pros who use it?