I personally believe that a knife like in the picture is the ultimate EDC knife.
It's small, and light.
The blade needs no maintenance because it's replaceable, and for very little cost.
It's always going to be razor sharp.
Because the blade is replaceable you don't worry about what it is that you're cutting.
Here is Australia there are no legal issues surrounding carrying a knife like this.

If your everyday activities include skinning and gutting animals I might suggest something a bit different, but for a normal person I think a knife like this is perfect.

Thoughts, /k/? Anyone own something similar?
Anyone have reasons why it wouldn't be one of the most practical/useful EDC knives?