You're supposed to be able to be at the gate in 10 minutes. Impossible if you're in the crew room and called out to a far gate in many of our airports.
Your call if you live that close, depends of if you feel lucky. but as a new hire I would advise against it.

Definitely don't sit short call at home if you're a commuter. It's called reserve roulette and more than one have lost at that game.