My 2007 RG with a built from the catalogue Screamin Eagle 103 produces all the power I need. And it's proved itself to be reliable with 22,000 miles since the build and not a single problem (knock wood) I suppose the case can be made that a passenger on a hot day would not be real comfortable, but unless H-D clones the V-Rod's radiator design, a water cooled H-D could be hotter than an air cooled one for the rider/passenger. I had a 83 Yamaha Venture that I damn near ran into Lake Winnepesaukee one year at Laconia because I was stuck in traffic and everytime the fan on the radiator would come on at crawl speed, all that hot air was blowin on me. One of the things I praised the hell out of my 05 SE V-Rod was that there was no excess heat from the radiator with the cowling they designed for it. So why am I rambling along on this when it seems like a problem with a ready made solution ? Because my gut tells me that any water buffalo touring bike H-D puts out is going to have to resemble what we're riding now to a much higher visual degree than the V-rod. The V-Rod was a totally new bike from every possible standpoint so H-D was not constricted by any expectations from it's customer base. Not so with the classic Bat Wing Electra Glide crowd. Or as of late, the Road Glide afficianados like myself. So there's the fly in the soup. You gotta make it look like what we've been buying all these years while at the same time making it fully functional. If the dam thing throws heat back at the rider/passenger it's gonna be a boondoggle. Soooooo, in starting this post I said I had all I needed in my 2007. I was not fully truthful. If I had a 2011 103 RG Ultra, I'd have the perfect bike. Plenty of good solid useble power in that 103 mill, heat issues resolved between the cross under the frame exhaust and the shields below the seat. So all this discussion about H-D producing a water buffalo is for me pie in the sky. They are still tweaking their air cooled bikes and that tells me they've no intentions of changing the platform that sells more large displacement motorcycles than any other brand.
Just my $0.02
B B