Tubulars are also used a lot in cyclocross by serious competitors, as they can be run at stupidly low pressures for grip, without fear of pinch punctures. Helen Wyman, the European champ, runs hers at 17 psi.|
It gets expensive though - CX racers will have at least two bikes, with probably 3-4 different tyre choices to match conditions. As they are glued to the wheel, that's 10-15 pairs of wheels, given spares etc.
PSN ID: Mikenetic