There are not any signature or bounty campaign who is paying on Eth at the moment, because most of the managers really prefer to pay in bitcoin instead of other altcoin, and i think that this is much more safer.

And those who pay directly with their tokens are a waste of time, i have never joined one of those bounties who pay with their own coins, it is very risky because you dont even know if you are going to be paid, or if those tokens are going to have some value on a near future.

it is all a huge topic to discuss, but yes, being paid with bitcoin is much more better than with eth.