I have one of these. Illum is right, it's not a heavy-duty unit. But it's not total junk either (there's lots of that on the store shelves). I think it passes muster for general purpose use. And as you mentioned, it's somewhat unique, and it's cheap enough that you can afford to break it, lose it, have it stolen, or harvest it for parts later.
The output is decent, and it has a well-focused spot at 75 yards. The switch can pressed partway for momentary light or clicked all the way to stay on.
I like it because it runs well on 4AA NiMHs. (My quick charger takes 2 or 4, which annoys me because my LED headlamps take 3.) I may also use it to digest some of the half-used alkalines that are kicking around.