I had an Oil Temp gauge replacement on my 02 and was sorry I put it in........on hot days in traffic, it would reach the upper end of it's range and make me crazy to get moving and get some air flowing, cool things down. I'd start hearing things, feeling things, wondering if I was damaging things.
I've have had 2 more fairing bikes since my 02 and haven't considered replacing the air temp gauge again.
I think yer better off putting the dipstick gauge in and finding out you was hot after you stop otherwise, if your anything like me, you'll end up paying too much attention to that stupid gauge and not enough attention to the stupid road.