Yeah, I think so, maybe, which is to say that on the east coast it's not as common as it would be in the north-central states..Michigan and Illinois. There's an annual 3 hour enduro somewhere out there that is a road course. You enter a team, and it's a pretty big deal, a charity thing I think, but they didn't have ice this year.
But I've talked to guys around here that build ice tires that turn both ways as well as just oval tires, in which case they usually shave them for a better left side profile.
How many bikes were there? Did you ride? Was there enough light? Was there beer?