Thouroughly tested 650
Well I think I can say my 650 has been tested in almost all road conditions.
9753 km so far on this trip
Some dirt, extreme switchbacks, steeps, German autobauns and everything in between. Loaded 2-up and baggage to the weight limit.
It has handled it all flawlessly.
I did drop it twice (in the same day) while stopped. I believe that I lost oil doing this.
I stopped at a dealer in Bonn, Germany, the service tech said that they sell and service more V-stoms there than anyone else in the country and he's never seen one needing oil, just routine changes. He had to come and check the level himself to believe it.
Mine took almost a quart to get it back to the max line.