basically, it's exactly the same as putting the model on a regular character, the only difference is that you only need to make a few animations instead of a ton.
yes, they may have certain glitches, but not nearly as many as a character port does. and yes, it will t-pose until you make new animations or rename bones (but renaming bones could cause some ugly stretching).
so if you need help with it,
http://forums.kc-mm.com/index.php?topic=9248.0. it's about regular character porting, but i'm sure that basically everything still applies.