My ears were burning...
I had one of the prototypes of the Hexamid. It is a truly minimalistic shelter which should excite many on this forum. In fact, I think it will be a huge seller.
For me, however, I had the same problem with it as I do a lot of gear. Despite the fact that it is 9' long, it simply didn't fit me. The slope of the ceiling was always on my feet and was either touching my face or a couple inches from it (this is without a bag/quilt or pad which meant it would have been even worse). To remedy the problem, I needed to slide to the open side to gain some advantage from the pitch. This put me right on the edge of the shelter itself which meant I would need to put all the faith in the world that I wouldn't move around a lot and that the weather would be kind. If there is one thing I can't stand and can't sleep in, it is rain splatter. Overall, it was just too small.
Basically, I’m holding out for the two person version which will be a foot wider and utilize another trekking pole. This configuration should raise the useable area of the pitch enough to get it off my face and feet and make it more useful overall.
So my vote is for big guys to pass on it. I’m 6’6” and 285, so if you’re anywhere close, I’d say it just isn’t the right gear for people our size. That’s not to knock Joe’s product because it is a really unique piece of gear, but just to say that most gear out there isn’t really made for people who can’t work at ceiling fan stores.