I have heard that there are/were some problems with the "quality" of the heated grips on the R3T. From personal experience with my 2007 R3 Classic...the heated grips worked fine (but they are different, I think, from the R3T heated grips).
Gerbing does make heated gloves for motorcycles but you are looking at around $200 plus charging adapter and this set up uses the motorcycle's electrical system for a power source. Or you can buy a jacket or a liner for around $300 and the gloves will (again an additional $200 plus adapter) plug into either the jacket or the liner. They (Gerbing) also make a jacket and/or liner with battery packs and your gloves will plug into the sleeves as well.
I am using the Gerbing Core system but it is more suitable, probably, for snowmobiles but the gloves are $169 (if I remember right) and that includes one set of batteries for each glove. I bought an extra set of batteries so that I can change them out as needed. These do not need to be powered by the motorcycle battery. They seem to hold up well but Gerbing does not guarantee them for motorcycle usage. I just bought them for use in Afghanistan and am seeing how they work during my riding so far into the cold season.
Dennis