The STEEM is safe, just not the STEM. They have enough to wipe out any post I'm guessing, as do @sportsmod, @nopal4u, @noleo4u.
Separating would mean your (STEEM) self-vote wasn't wasted if the above happened.
Yes I vote for him and my alt triggered because of his tag usage - it's the first day he's used this tag though and so I will let him off :)
Ah, it's a bot.
I'd probably favor separating them, as that would require a lot more time to vote each one individually.
It would cut down on the cross tribe abuse, imo.