Had the Derbi out last weekend for about a 60 mi run. Struggled a bit with the wind, hills, and me aboard.
Took me a while to remember how to ride it. Under 7500 you are dead in the water. After riding a SV650 for years, I had forgotten what "downshifting" was. The fun starts about 9000, but best not to run much over 12000 if you want it to live a while.
Parked it between a couple other odd-ball European bikes at the spring Crud Run in Pine Bluff, WI -