tri-gun competitions

anyone heard of them? I thought it might be cool to do something like that for airsoft. it's essentially an obstacle course with targets set up throughout it. contestents use pistols, rifles and shotguns to take out the targets as they try to move through the course as fast as possible. of course you'd cut out the shotguns in an airsoft version, but that'd be pretty cool.

Woot woot! I've shot competitively, but never tri-gun. Dual-weapon, but no tri-gun.
I'm sure it's been done for airsoft somewhere.

Check out the ASIPSC, I believe they hold events just like this.