I was trolling our local Bass Pro shops in Maryland and had a flash of insight -- they had an array of handgun magazine pouches there. I foind a single pouch from Meyer Co, that fit my HDS flashlight almost perfectly and was only a smidgen wider than the leatherman pouch. I picked it up and I've been using it since.

So, OK, now I have two pouches on my belt. But they are as reasonably small together as I can expect and it solved my problem. I hope my "thinking outside the box" helps someone else. -Gary