Cyclesmith Short track Series

I have added all the dates to the calendar for the 2013 Cyclesmith Short Track Series. This is a great race series in the heart of Halifax!

Is it mandatory to use a “mountain bike”?

I use an old road bike converted to hybrid mountainbike/cyclocorss thing for cyclocross, its got MTB bars, brakes, seat, etc.
I don’t see much difference between cyclocross and this series, and I did the entire CX series last fall (which was super fun), I’d like to do the ST series too.

I’m not sure myself. Check with Cyclesmith, or if someone who participated last year could enlighten us.