I just tried using the battery side pouches to hold other smaller LED lights. They work perfectly well for all AAA as well as some smaller AA lights, like the ITP A2 EOS, Tank 007 E07 and up to the size of the Hugsby P31.
I'm likeing this holster so much that I might need to strap it on and load it down with lights, then go streaking in the middle of the night to check out its true ergonomic capabilities. Perhaps a spirited night time jog naked through the city to see if the holster flops around while in a full sprint would be a worthy test... such a pain in the kiester when things flop around and such. LOL! I wonder if Olight sells matching ballistic cordura nylon M20 jock straps? Now that would be the way to accessorize! Oh, here they are. Darn this hobby! Now Its time to use my PayPal again and spend more money on junk I don't need. Urgh! Photos to follow, once I accessorize with my fake flame trustfires and Olight jock strap.