I have heated grips on my Ultra and I did on my previous bike (a Heritage). I liked the heated grips but they don't help in all weather conditions. Right around now where I live the temps range anywhere from 30s to 50s. At the lower end of that range the heated grips don't heat the tops of my hands and they get pretty cold, so I'm considering buying heated gloves. BUT, there have been plenty of times probably between 40 and 60 (probably even 70?) degrees, the heated hand grips are great but the heated gloves would be overkill. Sometimes it's nice to have the heated hand grips just to take the chill off.
Hope this helps.
2012 FLHTK, Solid Black