almost 100% sure it will work.. It's a channa micro we're talking about.. you could put it with an armed swat member and you could still not be 100% sure of the outcome.. it CAN ossibly work.. there is a better chance of it working with a less aggressive fish, the gator can be mean as hell to. you either get a (partly) tank mate compatible micro or you don't you are not helped by having another aggressor in the tank.
I'm not trying to be rude but I guess you (chronick) have never kept a micro. They are nothing like "oh my midas/rd/gt is so aggressive and won't let anything liv with him bs"
This;
http://www.youtube.com/watch?v=WPGmvemG6fk is what we are taling about.
note I'm not in any way promoting that, I'm disgusted by it. I love channa micro but unless you are willing to devote a 300 gallon + tank to one or having only tankmates that you are willing to lose you should not have one. I strongly recommend them, they are really rewarding as they follow you around the tank, interacting, will recognize different objects/people and will even be petted but there are other snakeheads for those who can't take a one fish tank.