Multiple tokens in one wallet is fine. This is how most, if not all hunters do it. It's just a matter of how you manage your portfolio in a secured and manageable way.
Most bounty hunters joined a campaign in the past when ICO is still popular, they sure have a lot of ETH tokens in their wallet now, particularly in the MEW. Unfortunately, ETH has dropped and ICO seems dead, so just like me I'm hoping that the current bull run will make some ETH tokens of my holdings to come alive.