We just bought a female joey - sweet as an be, never crabs bit a little at first but is great. I wanted to get her a companion, found a male 1 year old that is no longer hand tamed. Would it be a godo idea to keep the two sperated maybe in side by side cages until we can watch them and be sure they get along? The lady we might get him from has 3 other gliders, 1 more male and 2 female the others are 3 years old and none are hand tamed any longer. Am I flirting with disaster? Should I look for a tame glider? This lady really doesn't have time these gliders and is trying desperately to get rid of them, if I could, I would take them all but I don't have that kind of time or space.
getting a glider who is hand tame or not is really a personal decision. If these four other gliders are currently living as a family unit, it is unkind to split them up. You stated that you would consider getting them all, but don't have the time. If the four were properly introduced to your one, then you would only have one cage of gliders, which doesn't require much more time at all. Play time is play time no matter how many gliders are playing. And space: It would still be only one cage.
There is a strong possibility, though, that an already bonded family will not accept your glider.
If you do not think getting them all is the thing for you, then I would not split them up. I would suggest a good local rescue for the woman (where are you located BTW?) and I would find another glider for yourself.
However, No matter WHERE you get the glider or what its personality is, ANY new glider coming into your home should be quarantined for a minimum of 30 days IN A SEPARATE ROOM from your other glider. Rehoming causes stress in ANY glider, and stress can bring out many diseases that are lying dormant.
Once quarantine is completed, introductions are necessary. Just throwing two gliders together is takinga risk that they will fight and possibly injure each other.