2 things:
1) those safariland QLS platforms are great. Very popular in .mil and LEO circles to move a holster from rig to rig. If your mount is not intended to move around too much consider tying off the female portion to your belt with cord or a zip tie. Those forks have been known to work free from molle webbing on rare occasion.
2) where the f$&k are you taking your baby that your need a quick draw holster? Kudos for innovation but no points for parenting.