If you use gortex trousers you may get a sweaty, wet arse.
The K1600GT I had last year had a heated seat with five heat levels. It was ok but not sure it's necessary.
Was having trouble with my riding gear leaking and was warned that heated seats can turn the water to vapour which then passes through the gortex membrane.
My trousers did actually have a leak so wasn't a problem but something to remember.
Believe same thing can happen with gortex gloves and heated grips.