Just installed Brakeaway's 6CP03 cruise control on my 2013 F6B with heated grips. Although Brakeaway clearly states they don't support heated grip installs, I don't see an issue unless you are prone to using cruise control at full throttle. At full throttle, the power cable to the grips just touches the Brakeaway unit, but it didn't cause any issues in my case.
Regardless, I won't be engaging cruise control at full throttle so it's not an issue for me.
Overall, the system works great and blends into the bike aesthetically. It is a little pricey, but the best solution usually is.