I've got one that I've carried since I bought it in 1988. Carried it on my keyring until last year, when I replaced it with a Spyderco Dragonfly.
The Tekna then went on my badge lanyard at work, just in case I ever have to cut something, and don't want to use a real knife.
I agree with the holding an edge comment. I quit trying to sharpen mine like a knife. I gets dull, I just take a file to it. Works fine like that.
Because the handle is so damn short, it really isn't suited to much more than opening boxes & opening envelopes because you can't get a real good grip on it.
All-in-all, it hasn't been a bad knife for what I paid for it. It just isn't all that useful because of the handle size.
**edit typo**