Well, I've not used one, but I'm looking at it on the TOPS website. It's a good looking knife and has an integral guard which I'm rather fond of. What do you intend to use it for? It looks a *bit* on the heavy side for a fighter at 1/4" stock, but that's certainly personal preference, and it is a fighter first and foremost with that long clip and narrow tip. For utility purposes it would certainly beat having nothing, but wouldn't be my choice. Again, it's going to be heavy, but that weight is going to be very close to being centrally balanced due to the blade shape/geometry and not out front where you can make use of it in chopping. Also, the long clip again is going to greatly reduce your ability to baton/split with the knife both because it's hard to get a good solid hit on it and also because it will eat up any wooden baton in pretty short order; not to mention the fact that I'd be worried about the strength of the--again--narrow tip under repeated impact. Now, you may have no interest in chopping or batoning, but in that case I don't know why you'd want a 1/4" thick field blade.
Entirely up to you. I have several knives in my collection that fall into the "because it's cool" category and Prather War Bowie certainly fits in that. For legitimate use, fighting is what it's going to be good at (or hog hunting, but the stab is what it was designed for). If you want a large utility knife, there are more boring designs with simpler grinds that will easily surpass it. All of that said, and as I'm fond of bringing up, primitive man survived/thrived in the wild for literally tens of thousands of years with sharp rocks as his tools, and would have LOVED to get his hands on any steel knife. Thus, if you want it enough and decide to take it camping, you can probably make it work.