I've tried a variety of heated grips (inc Oxford) and hate the fact that the grips are 'fatter' than usual - they just feel uncomfortable.
I've used the symtec heated grip kit
http://www.windingroads.co.uk/catalo...roducts_id=138
on both my KTM Adventure and on the Tenere.
You can use any grips with them, and if you order the black toggle switch, you can mount it very neatly on the 'cockpit plastic' that covers the back of the headlight.