An SV would be an interesting challenge on Irish run. Having a foot of suspension travel gives my bike a little bit of an advantage. Big rocks and step-ups don't kill my momentum. Not impossible, but if you're afraid to drop it then i wouldn't try it. My motard isn't perfect anymore, I don't mind dropping it in some mud from time to time.
When I rode imogene with EJV i felt bad since i was obviously holding him up. I concider myself to be a mid level skill rider, and he blew me away on the S10. He was cool about it, and helped me push a few times when i needed it.