i've got them on the YBR, and Oxford ones on the Fazer.
got mine for £25 from a dealers and i must say they are just as good as the oxford ones. the grips themselves dont look as good, but you cant gaze at them whilst riding and they keep your hands nice and toasty anyways... and they heat up quite quick as well.
The throttle grip on my Fazers is broken so i'm thinkin of putting R&G on that aswell as the YBR coming up to winter
go ahead!