Yup! Love em to bits. I don't have cold hands and don't do many winter miles anymore but when I did, the Barkbusters meant I never needed the heated grips as long as I had winter gloves on. On milder winter days, even summer gloves were OK.
The same single point fitting that fits the S also fits the R. You buy the bar kit and then select the cover of your choice and even lights if you are like TomK1300S.
I take mine off in the summer months if there is lots of motorway work for touring as I put the 'cruise control' throttle lock thingy on the right bar instead and it looks daft with only one Barkbuster fitted.
When you fit them, make sure your mounting bar is angled DOWN from the bar end and then horizontal as it points forward. I see so many fitted horizontal from the bar end and then angled down. Barkbusters claim that the wrong angle fitment can cause the protectors to fold in the event of a tumble.
As for suppliers, Google is your friend but R&G in Alton are the ones I've used. Just find the best deal, Black Friday may help at the moment.