Only it was not really a "problem", per se, but… oh, never mind.
Anywise, while I was busily trying to make this comparison review between the Inforce WML and the Streamlight TLR-2 work (was having issues trying to show comparative output levels over time, but I hopefully have fixed it… now I just need to find the time to implement my plan), one thought that occurred to me while handling the WML is that it would not work at all as a pistol-mounted light. The entire structure/ergonomic design of the Weapon Mounted Light is optimized to provide a comfortable, easy-to-operate interface while mounted on the forward rail system of a long arm (and, believe me, it works), but that purpose-built design precludes it from working well with the right-in-front-of-the-trigger-guard mounting point on pistols.
Worry no more – Inforce is releasing the Auto Pistol Light (APL):
Designed with a straightforward, unique, bilateral and ambidextrous paddle switching system, the INFORCE APL affords left or right hand activation and natural finger movement from the weapon body to the switch to operate its momentary and constant modes.
I have not seen one in the wild yet (they were supposed to hit the market by the end of last month, but we all know how production/release schedules go), but Soldier Systems has a spec sheet, and they look pretty decent against their competitors.
Personally, I cannot see hanging a light off my pistol; on a long arm, both hands are already preoccupied holding the firearm, and a light there makes perfect sense, but with a pistol, I have one hand free, and can be doing all kinds of other things with it. The additional weight, and complications with holsters, does not seem overly worthwhile to me… but, as I say that, I only have one full-size semi-automatic pistol and it is solid metal, so maybe my perspectives are a bit skewed.