It depends what you want from the multiclass. A bard who multiclasses into rogue only because he wants sneak attack for some close combat punch really doesn't give up much of anything. Just 13 dex and a feat. And usually utility powers don't require stats at all.
So you could multiclass bard/rogue and get sneak attack once per fight, and Ignoble Retreat, or some other similar utility power. It would work fine.
So you could multiclass bard/rogue and get sneak attack once per fight, and Ignoble Retreat, or some other similar utility power. It would work fine.