Back in the old days when I only had one bike I had a set of Hurricanes set up on another set of wheels so I could swap them with the knobbies on my Trek 6700 and use the bike for commuting.
I discovered how good the Hurricanes were one afternoon when I was riding in the river valley and was at the entrance to some excellent singletrack and met a few young guys on hardtails... one told me I'd never make it through with those tires (I also had my paniers on) and took off.
I finally ended up having to ask these guys to let me pass them as they kept stalling on the climbs and sometimes I think I am on a mission from (insert deity of your choice) to school these young fellas.