Character wise, GT is, indeed, unsavory at times to say the least. Not a great role model to put it mildly.
However he does come across some interesting guns and get to use them. So, while we can have an "academic" approach with FrgottenWeapons, for instance, GT gives us the opportunity to see the gun in action. Which is also nice.
Anyway, yeah, the red-dot is indeed a good idea. Especially in that configuration in fact. Aside from looking good (and looking good is by far the most important thing ever), it likely facilitate acquisition greatly, cowitness and does not add to the overall height of the gun.
Don't know if that surefire-reflex is NVG friendly though, but with a slightly bigger glass (like mepro for instance) I suppose the FOV would be a tad improved.