Borghi - yes, the Fastway F5s from my GS went on with no modifications to bike or peg. I had them set in the low position on the GS, and kept them that way on the S10.
Johnny Cinco - I'm not sure that the F5s give quite as much down adjustment as the SW Motech pegs, which seem to have the same platform dimensions. The F5s can be angled somewhat though, which I found to be a nice feature.
As close as you guys are, we should just catch up sometime so you can check the F5s out before spending the cash!
I would very much like to see a set of the SW Motech pegs in person; one thing that concerns me a bit about the F5s is that there are no peg feelers. When I had them on the 800 GS, it was not unusual for me to drag the pegs every now and then. I did the same thing with the S10 a bit over a month ago while riding Deals Gap, and something other than the left peg touched down first... not really sure what it was, but it made me a bit jumpy about pushing too hard - if I remember right, the left stock peg had a good sized feeler on it.
Chris