G# is no problem at all. Just put a capo on the first fret and play as if in G.

We've been through this (and some other stuff in this thread) in another recent thread.

G# is a problem in many (most in the UK?) sessions. Sure it's fine for the guitar players. Other fretted instrument players might just have a capo with them. The fiddler for example might struggle and the poor G/D melodeon player for example is sunk.

There are sociable session keys. G and D are the best for the type of mix I usually encounter.