Yes. Quite a few people trade ETH-pairs. ETH pairs usually have less volatility which means less opportunities ... but it is still profitable.
Remember to NOT trade:
BTC-ALT coin and ETH-ALT coin at the same time, on the same exchange wallet. Or GunBot may get confused and sell at an inopportune (bad) time.
Also don’t trade BTC-ETH and ETH-ALT coin at the same time, on the same wallet.