I'm planning to use symtec heated grips on my Tenere
http://www.windingroads.co.uk/catalo...roducts_id=138
They allow you to use any handlebar grips you want, and come with a flush rocker switch which you can mount in the cockpit.
I'm just deciding what handlebars to buy before adding heated grips..
I had these on my KTM950, and loved them.