The new ones are a lump. They come in two flavours. Big lump with wooden handle, and big lump with synthetic fiber handle. If you want something you are unlikely to break then I'd say go for it. If you want a cutting instrument then avoid like pox.
The original was designed in an attempt to give some of the chopping power of a machete in a small belt knife format. The prototype dates back to around 1960 and belonged to Wilkinson Sword. If you follow along the time line you can see it becoming increasingly less sophisticated. The stag handles got dumped first, and then the guard and handle shape underwent several revisions. About the only saving grace is that the original clip point got dumped in favour of the drop point. However, by far the most significant feature is the grind. Over time it has morphed into the spasticated nasty offering it is today, with bad bevels. Obviously, Wilkinson Sword hasn't got anything to do with them any more, and hasn't for a long time. They are banged out up north, and depending on where you get it either it comes in a basic folded leather sheath or an equally basic offering in ballistic nylon. Prices vary widely here. I see them going in some place for two or more times the price as elsewhere for exactly the same offering.
The one Pitdog has is older. I can't pin exactly which year it was made but they are hard to come by now not rare but will probably take a rummage. Look carefully at it compared with the ones made now. His is much better.