I own one, and it's a stout sucker. It will NEVER chop wood, it will break wood. It won't bend, you're not stong enough, you can use it as a anchor to wench your truck up a hill. They do it in the DVD that comes with the BH.
I've thrown mine, but the only thing you'll hurt is your elbow, it's not for throwing, unless you're Thor! The handle is made well, in that the G-10 has been done well, lines up with the steel very well. But, since it's so heavy, and the G-10 is textured, you better plan on wearing gloves. IMO, the handle isn't that ergonomic, it's not the best handle design.
The edge, there really is not an edge, it won't cut you, you don't really need an edge when it weights 44oz. I've still managed to throw chunks of wood, break fence posts(after a while) and it will cut right through sheet steel. I punched holes into a steel chair with just it's weight, not much strength involved.
That big ass hole in the head could be problematic when breaching, it can/will get hung up and slow you down.
Now, the spike, it's awesome, it sinks deep, and then you can just rip/pry it out, don't worry it won't break the spike. That same steel chair has lots of puncture holes in it as well, the spike sinks in and the wedge below it helps it just bounce right back out. You could sink many holes, one after another.
The sheath, on mine at least, is a Buy Brown. No descripton anywhere says that, but on the back it has a BB, and it's a very well made kydex sheath. The straps are very heavy duty rubber, with fabric inside them.
Pros...
weight, has lots of momentum
S7, the HT makes for a very tough tool. Concrete will gouge the "edge", but that steel chair has done nothing to it.
SPIKE is it's best feature
Cons...
weight, has lots of momentum, hard to start up and stop. Go swing a 3 lbs sledge hammer around and you'll get an idea.
hole in the head, could get hung up, will get hung up at some point.
g-10 is very textured, good when wearing gloves.
The beast thing I've got from owning this, is when I use it for "sparring" against a swinging log. Doing my exercises with this hawk has built endurance and strength. It makes other, normal weight, hawks seem very fast and controlable. Then again, maybe I could have found a much cheaper hammer to use for practice, and saved lots of money. Would I buy it again, probably not. That $200 could go to a better designed and better made hawk, or even less could buy you a wooden handled/traditional hawk or even a great axe.
I bet that any RMJ could breach a wooden door much faster, because those can chop, and remove chunks of wood. An RMJ's sharpened beard will continue to help cut that steel when removing the head, can opener style. Where the GG&G will just get hung up, and have to be removed and then you can start cutting again.
For a little bit more money you could also get the Benchmade Hawk, it's a breacher, if that's what you need.