Well, I got to check it out at the STC tent at Nam, and I'm almost embarassed to say I might be sold on it... Its quite a bit lighter than the T8, much slimmer, and a bit shorter (at least with a UMS compensator on the T8). The trigger's length of pull is much shorter and more comfortable, and the grip is obviously much smaller, not that I had any problems with that since I have gorilla hands... But the big winning point to me is the MUCH lighter weight of the mags.... You could probably put SIX fully loaded TPX mags on a scale and it might very well be less than ONE T8 mag. I still wish they would have made them 10-rounders, and hope they'll consider a 10-12 round extended mag in the future. With the apparent popularity on the initial run, perhaps they just might... Fit and finish of the clamshell halves isn't perfect, but its much much better than on some of the prototype and demo-models that we've seen pics of thus far. Barrel on the one I handled was very easily removeable despite the limited amount of it available to grip, but the shroud definitely fits very close to the barrel so anything with a larger OD than the stock one (didn't have a caliper handy but I'd say its about 7/8"), isn't going to fit without modification. Remote line option just adds to the win factor, although I'm still not a fan of its location at the back of the "slide area". I would have much rather seen it piped through the grip behind the mag.
My only real concern with it at this point is how well it shoots (still haven't gotten to test fire one), and how well the polymer clamshells will hold up to abuse over time.
Now the only problem is paying for it after having to buy a crap-ton of new camping gear for Nam lol... Guess I'll be doing some extended shifts this week
