The FJR has a decent OEM Windshield, the better option though are the aftermarket ones from CeeBailey's and CalSci. I've got a CeeBailey's and ride with my visor open no bother and the windshield up at about 3/4 of the way.
Heat? Well, she ain't as hot as my Gixxer 750, she can fry your arse in the summer and being stuck in traffic. Yet the FJR, especially Gen 2 (06 - 12) aren't getting hot, yet warm and like the fellas said, maybe the feet, as the pipes are getting hot when you go at higher speed.
I like the clutch a lot and getting stuck in traffic hasn't bothered me nearly as much, as with my Gixxer, which I had to train for it and replaced the lever for the once from Pazzo.