@Smedley Butler:
I'll give it a try.
What you got yourself is a "classic" in a nice variant.
Ernie Emerson is a piece of our knife-culture. He started as a pure custom maker and if you do a search you will even find examples of his "pre-tac-aera".
When the demand for his tacticals exceled his time on customs he started a kind of production line. There was even a cooperation with BalisongBenchmade - back then.
From what I understand this knife was developed with the US Navy Seals.
This special model has even found it's way to a well-known online encyclopedia - not too many knives have that much history to offer.
You are right, these days many manufacturers try to link their products with some kind of SF, but then it was special.
As for what the knife is and what not, most aspects have already been mentioned.
From it's developement it is a folding field knife, which can be maintained with common tools readily avaliable anywhere in the world.
It does not use fancy screws, i.e. ; It's a "tactical knife", so it's not a city knife or one that was designed to be carried cliped to a nice pair of trousers.
(You can see what it does to bluejeans.) The knife itself is not afraid to get used.
I may remind of many new designs that tell us, the knife got a somewhat "crude" finish so the user may not be afraid to use it.
This knife got a pretty nice finish with use in mind.
The Mcusta is a completely different thing, more a gent's knife. It's a nice knife that feels good in your hand.
There are so many different kind of knives out there these days and it is so much easier to get information on them.
So I hope I got you interested in a little more background on your new knife - there is much history to be discovered - that's what knife collecting is about.
all the best
red mag