I've run the AGC for a number of years and two years ago purchased the Kenai chest holster to replace a thigh rig. Though it sounds cumbersome to have one atop the other, it's not bad. I like having my 44 on my chest in case I'm ever in the horrific situation of having a bear on top of me.
The KCH quality (like the AGC) is awesome and I even purchased two kydex shells for two different firearms. It is nice to have both to run individually as well since I hike often with just the KCH (when I don't need my binoculars). Hope this helps.