It could have something to do with how they're sharpened, but most knives will slide to the right because they're designed for right-handed people and sharpened to suit the direction a right-handed person cuts. I'm sure you'd have to use a knife designed for a leftie to understand what I'm talking about.
Strangely enough, once I manage to find the blade on my Leathermole it seems to be pretty well balanced and easy to use, not to mention extremely sharp.
As for first aid, I did a course with St. John's Ambulance last year (and enjoyed it more than just about anything else I've ever done). I have a few natural/alternative medicine first aid tricks up my sleeve too.
