Not that I'm from your area, but funny you ask this.
I dropped off my old rim w/ mc tire on it and my new Kumho last week to a local tire place. I asked to have the tire mounted and left it at that. An hour later, they called me and said they noticed it was directional and asked which "car" tire this was being mounted on. I thought quick enough to just reply left rear. They had it ready an hour later.
If I would have been challenged I just had plans to say it was a trike rim meant for car tires since it's a three wheeler.