Can’t answer as to the sheath. Jeff Randall never liked ‘em, and calls it a ‘boat anchor’. It’s deeply unfashionable to like the ESEE 5. So call me unfashionable because...
I think it’s a cracking knife. It is heavy, it is only 5” in terms of blade length, it’s a quarter inch slab of 1095, it is the epitome of a ‘sharpened crowbar’. But I like it all the same.
I have taken this knife out for days at a time, and I was always surprised at how well it does with finer work, in terms of wood. It won’t slice an apple, it’ll split it, but it wasn’t conceived as a kitchen knife. For feathering, carving, and so on,
it is surprisingly good.
The 1095, as produced by Mike Rowen, is really excellent. It holds an edge very well indeed, and is very easy to maintain. Oh, and you could try to break this knife, but it would break
you long before you got close to breaking
it. 
For a bona fide survival knife, this knife is if anything overkill. But I’d always favour having utter confidence in a tool, rather than being even slightly anxious about its robustness.
There are better knives, it is true, but the ESEE 5 will go to hell and back, with only light stropping required afterwards.
If you are never going to use it, why not pass it on? But it’s not a bad item if the S were truly to HTF.
