My opinion: Heated grips or the heated grip wraps work ok up to a point, but they're limited. On real cold mornings (down into the 20's), my fingers and the back of my hands can still get uncomfortably cold, while at the same time the palm of my hands can get uncomfortably hot (with heated grip wraps). I haven't ever tried heated gloves, but I would imagine they would be better at keeping the whole hand warm in colder weather and at higher speeds. You would have to unhook them when you get off, but that would probably only add a couple of seconds to the whole dismount process. Grip wraps work ok for me here in NC, but I would think you'd probably like heated gloves in colder places.
Will