[joewilliams]

A cheap way to add quick on/off capability to the standard leather case that comes with the IHP-120 is to put a caribiner (spring clip) through the case's belt loop. Then you can hook the easy-open caribiner through your pants' belt loop instead of running your belt through the closed loop on the leather case. This will let you unclip the case from your hip without having to take off your belt.

You can get a caribiner at any discount store for about a buck, usually in same section where you'd find jewelry, sunglasses and lanyards. I assume that better ones are also available at hardware and sporting-goods stores.