So about those summoner pets.

I imagine pets will either have to be switched between or the damage scaling with Hero Damage (if it even has heRoF damage) will be poor as 2 DPS pets with a good hero damage scaling could be really powerful.

Buff beam'd Ogres? So would an Ogre leaving the buff beam during Combat Phase destroy the buff beam?

I suspect it'd work similar to sharkens pushed items, where items sold or destroyed would destroy the beam, but something moving out would just lose the buff.

However, I'll take your question 1-step further... Summoned creature being killed, when buffed, that could be costly, although you have the chance to run away and leave the buff in order to die/sell? in safety, without risking the buff beam.