I think that another reason people aren't into this one is the fact that it requires 3 batteries and is unregulated.
A light like this is meant to be bright, and this one will only be bright for a small portion of the total life the batteries can offer.
With good circuit boosters being used in lights to keep them bright for most of the life of the battery, you can get the most of the batteries and there is no need to use 3 of them (which make the light longer and a bit more annoying to feed).
Another thing is that considering there aren't any whiz-band electronics in there, this light is pretty pricey- between $50 to $70 online. This is the same range as the Inova T3 which will remain brighter for longer, has HAIII, and only uses 2 cells (even though they are CR123s).
Despite these criticisms, many people liked the LX 3.0 very much, and Gerber's aluminum light line has proven to be above average in quality, so if you've got a good deal on the TX 3.0, I'd say go for it and tell us about it
. I for one would like to hear how people like the switch on the Gerber T line.