Do you join a "real" guild on your teams?

[Atrocious]

I'm in a real guild with my main character, but this is a guild of mostly RL friends and friends of friends, and everyone know I multibox. Altho one keeps forgetting and wonder who those non-guilded chars that I hang with are. I usually drag my multibox toons with me when we are lacking one or two for an instance or if we do a raid. Hopefully once everyone get geared I can use my other toons to fill the 1-3 slots we are missing for 10 man raid content. Most view it as a perk as if someone is late for something I can just bring in a toon or two to fill the slots until the missing people are present.

My alts are all in their own guild. I do get some questions, but that is mostly because of the guild name.