I've been a passenger on the FZ ,many times, in 120 deg.F weather and 50 deg.F weather, I feel no difference. It does not get HOT and uncomfortable. I don't understand why people say that.
I'm with you, i take my 9 year old son on the bike daily, and he has never said anything...and believe me, he has an "opinion" on everything! Also asked him and he said he doesnt notice the heat. although the seat does feel a weenie bit warm after a ride...but with gear on you cant feel it at all.
Now my old Ducati, if you sit at the traffic lights for more than 1minute on a Hot Day, you are looking for a respirator!
At least you canT burn you legs on an FZ6 exhaust, or melt your shoes...which just about every pillion i have ever had on my bikes has done previous to the FZ6.