The key/trick to the low bars (assuming you have them) on the LS is that one must get the TALL/LONG stemmed version of the rearview mirrors. The last time I checked, these aren't always easy to find, especially in the black painted version that should go on the LS (instead of the chrome). I bought a new set of black rearviews a year or two ago to get the stock look, but they turned out to (Again) be the shorter version, which on the low euro bars can just barely show beyond my shoulders, and if I've got a wide duffle bag on the back seat (As I will have tomorrow to ride to the national rally in PA) I can't see a thing behind me with them. Soooooooo, my bar end black Napoleans, which give a wider/better rear view perspective, are back on.
If you can score the tall black rear view mirrors, you'll probably be fine. The shorter ones will only work OK if mounted on the tall US handlebars, which look pretty ungainly on the R65LS, IMHO.