definitely, depending on how big that tank is. How big is it? I had a sixline w/2 regular ocellaris clowns in my old 55, and then had another one in my 40 with 2 black ocellaris and they were all fine together... Just make sure its not like a 10g...if it is, then i'd only do one at a time.
Also, i'd only put one fish in your tank at a time anyways, so really there should be no point to putting both in QT at the same time. In a tank that small, you're gonna have to wait at least 3 weeks before putting the next fish in...so why not wait till one is already in the tank and then get the other?