I have a friend who tested his road tubulars by putting them on the wheels with no glue. He went for a ride and made sure to do some hard cornering and had no problems. Then he went home and glued the tires to the rims.
Just because you can do it, doesn't mean you should.
I've heard of the shellac method, too, but never tried it.
And BTW, I like the Vittoria glue.
Paul