EUR: having only like 2 or 3 Euro in a wallet is not really useful (unless you're in the Bitcoin Cash City where you could buy a beer for a fraction of a BCH), I would tip BCH if
I have also thought about tipping in BCH a couple of times, but never did. I thought about tipping and recommending the Haven app for spending.
I've tipped people ~$20 using paper from https://bitcoincashnotes.com & recommended BCH sites. It's harder to refuse because they don't need to download/install a wallet on the spot.