Let me ask you another question. On occassion, I will make a lap or two through the neighborhood wearing shorts and flip flops (no comment)
and the heat coming off the engine is enough to cause me to hold my right leg away from the bike. I never get an overheating buzzer or whatever
but is that normal?
If I'm just running to the shop or a friends house I ride in trainers and shorts as well and also had the problem of the exhaust
trying to melt my leg so I bought some heat wrap tape and wrapped the whole exhaust, from the engine to the back box (or whatever you call it on a bike). Made a huge difference!
On the plus side its also reducing heat soak into the radiator (actually the main reason I wrapped the exhaust) and its reducing the heat that it was piling into the rear shock (the exhaust on my 426 runs very close to the shock).
It theoretically increases power as well as the higher heat held in the exhaust system improves scavenging, but I havnt noticed a difference.