Why dont you pay in BTC ? You will get the recognition / promotion and the participation.
because the main issue is to promote GP, so the best thing to do is to give GP so that the coins got more well known to the others,
You can either promote your coins through active participation, or
try to promote the usage of your coins by paying people with them.
Trust me, if you give your coins to people who have no interest in holding it, all you will be doing is creating a cheap sell wall.
Anyways thats just my opinion.