I remember that Bravado (I think) had an old school SJ for sale with a sharpened choil. I almost nabbed it but I like using my choil. If I remember correctly he stated that the previous owner told him he sharpened it for a specific task. Skinning? But I forget what it was.

I am sure he could give you some feed back here.
lol, I'm the one who sharpened that. I am about as adamant a naysayer of choils as you will ever meet. I hate em. HATE EM!!!
I sharpened it because I was tired of things snagging in it when I used it. I index my fluffy material (a lot of fabric bunched up, plastic bags, carpeting) by putting it on my index finger, then putting it on the beginning of the edge. that way I don't have to visually see my knifes edge, I know that its on the edge by feeling it. not so with a big ol' crappy choil waitin' for me. so instead of being able to index my material by feel, I would end up putting it in the middle of the blade, then sawing it. inevitably I'd end up with at least a small portion of the rolled up plastic or fabric getting caught in the choil, so I'd have to lift the material off the blade, then reset it on the blade again so that I could finish my cut.
when I'm in a hurry, the last thing I want to have to do is look at my hands, make sure everything is in place, then make a detailed cut. I want to be able to grab, saw, and get the hell out of there. and I want to be able to do it blind, with as solid of a grip on the handle as I can get.
thus I sharpened the choil.
after that particular knife (and its sister .220 le sj) I never did it again. in order to get a really functional "non catching" choil, you need to smooth out the corner between the choil and the edge. kind of like whats seen on the extrema ratio shrapnel, where the choil tilts into the edge, rather then creates a 90 degree corner.
the way I did it worked, but you had to pull backward against the material kind of hard, and I didn't like the way that worked as much as I had hoped. I'll never use a choil - I'll always grab the back of the blade if I need to do detail work. and If I need to power through things, holding the choil is a compromised grip - something I also will never do if I have a choice. so a sharpened usable choil is better then a normal non-usable choil.
If I ever do something like that again (hopefully I wont, since I ordered custom choiless pieces from the custom shop

) - I'll end up reworking the edge into a very wide recurve to get rid of the choil completely.