No. A hole will be ripped in the fabric of space-time and the world will cease to exist. Impossible to do both.
But seriously, I'm not sure I understand your question. Of course it is possible. You can't judge at a competition where your team is competing, obviously, but otherwise it would depend on time management and your amount of free time.
As a coach I will judge comps that are not in my county, or in my county if there isn't a HS division. I don't want anyone saying I'm biased b/c I coach in that county.