How big is your cell? If it is tiny, say about the same size as your multitool, and your flash is a shorter one, I'll share my idea. <img src="/images/graemlins/smile.gif" alt="" />

I carry my Leatherman (with a Pocketwrench behind it) and my Streamlight Twintask L1 in a pistol mag pouch from High Speed Gear, Inc. Velcro and fastex on each lid, it isn't opening, and it is built better than the Pock-itz. They make a three-cell version as well. I went through skdtac.com for mine, and optactical.com carries them. I think lightfighter.com might as well, but forget trying to order from HSGI directly.

That being said, it LOOKS like a pistol magazine pouch to anyone who has a clue. If you want something a little softer, and/or your light and cell don't fit, the smaller belt pouches from Maxpedition are very highly thought of.