Rough riders, at that scale, could pas for some medieval riders, which is ok at 28mm as they have the badges of the imperial guard, but at 6mm they simply look out of place to me.
I know the GZG scout cycles, but I cant see them being very useful on any non urban battlefield as they don't look all that off-road capable. To be more specific, I am looking for something which has that starwars feel of floating engines as rides, so to speak, really anything that would look good with those starwars swooping noises playing would do I guess. (thats a trange way to describe what I'm looking for, but I guess it works)