I also think that the bags/panniers are the same (though I don't have any at present to determine this for certain) - the mounts, as already discussed are indeed different -
the factory shock length on the R65 is approximately 1/2" shorter than the R100, and the end where it mounts at the lower front corner (near passenger footpeg) is
also different (rotated/twisted 90 degrees). Perhaps the shorter shock length tends to exacerbate the close fit of the bags to the rear cowling/handles on the LS.
I think that those pastic handles look cool on the LS, but I can't imagine a passenger actually using them for any security or support - they certainly don't inspire me with any confidence when I grab onto them, and I've never dared to use them even for strapping a sleeping bag on... I guess they are a "look, but don't touch" kind of item..
where have I heard that before. ;-)