Has anyone ever......
 

used regular contact cement to glue tubular tires? I'm talking about the stuff you would buy at the Depot or any other hardware store?

Or is it best to "stick" with the Mastik One Tubular Glue sold at Cyclocross World?

Haven't used regular contact glue - think that it would be extremely difficult to center the tire.

In my limited experience, Conti glue was worked fine. Havn't rolled my tires yet (knocking on wood.)