Really? I've been on more than a few that were very toasty. This is a potential problem on any bike with high mounted (most commonly side mounted) radiators that discharge their heat load along the side of the bike. The Yamaha FJR had this problem for many years. I'm sure there are others. Never, ever had an issue with heat riding on my GS1200 oilheads. I suspect that given the relatively minor role that the water cooling plays vs.air cooling it will not be a problem. Time will tell.