I have a 134 and like it quite a bit. I'm 6'1" and 180 pounds, but have big hands and it fits me pretty nicely. I was worried about the physical size and weight, but even though it weighs almost a pound, it doesn't bother me at all. As far as what people might think of it when I'm out and about I could care less. I do take it out in the car, but as far as carrying it, it's size kind of negates that and I have a VTR for that anyway.
I was concerned about the 6.5 watt minimum power setting, I've been sticking around 6 watts or so with my Vamo, but find myself up at 8 watts with the iClear 30 it came with. Even the T3s and Protanks work well at 6.5 or even 7 watts on it, at least for me. Any higher and they start tasting burnt to me.
I guess my only complaint is that the fire button is quite stiff and needs to be pressed hard and held down fully and firmly. Since it's a "three click on-off" device it can easily be turned off by not holding that fire button down properly while taking a long, enjoyable, drag. It did take a little getting used to.
Overall, I really like the size, weight and, of course, the look. In fact the look is what drew me into wanting one. Performance has been great with any of the devices I've used on it and it hits like a freight train. Now Innokin is coming out with the "Cool Fire" that looks like a grenade, like I really need a grenade to go with my M134 minigun....yeah, I really do need a grenade to go with my M13 minigun!