I own a LightStar 220, which I assume is one model down from the light you're looking at. Three things bother me about this light.
1. SOFT plastic lens. I have yet to drop this light, but I seem to have managed to put quite a few scratches in the two months I've owned it. Pushing down on the lens with my fingernail about a dozen times to check for flex in the lens this evening appears to have left some more scratches on the lens. *sigh* The head appears to move back, but it was a fair amount of force I was applying, so it's probably good in a heavy rainstorm, but I wouldn't submerge it very far or very long.
2. Sealed head. I've talked to TerraLux, and opening the head will void the warranty. Why would I want to open the head?
3. The head is fogged. Two other lights I own also fogged (probably related to the heat). It needs to be cleaned at least once. Opening the head voids the warranty. At some point, this fog will **** me off to the point where I'll open it anyways (shipping, duties, taxes will likely match or exceed the price of the light, so I won't be sending it back to be "fixed").
4. The threads of the tailcap are grinding. I've used generous amounts of silicone grease on the threads and it ends up dirty and rough. I've wiped it down and re-greased it three times, but it still hasn't improved. Light oiling it did seem to help though. TerraLux advised to not use excessive amounts of grease, as the threads are used as a power path, but since the threads are anodized, as well as the inside of the battery tube, I don't believe this is correct. The rear of the body tube appears to be bare aluminum, thus the body itself is the electrical path.
OK. That was 4. There's a few other minor issues, but those are the highlights.
On the upside, I ran it for 2 hrs on Eneloops before terminating my run test (the head was fogging and it was getting warm). This exceeds the 1.5hr claim. The front 3/4 of the light got very warm, so the heat sinking appears to work alright. This is probably related to the fact that the body of the light is about 2mm thick, so it's probably pretty strong too.
It's probably OK for someone moving up from an older Xenon MagLight. I doubt an average person would even notice the fogging. But since you're asking here, you've probably moved beyond that level. I'd look at something else. Since it's for work, maybe consider a headlamp.