It won't hurt them to be razor sharp although it would be best not to hit rocks.
I think they are mostly supposed to be squared off at an exact angle rather than sharp but they are cheap so why not make them razors and see if they cut different?
I found a new(to me anyway) kind of edge I really like. The old Busse asymmetrical
edge was perfectly flat one side and a nice appleseed convex on the other.
It is very sharp and not much harder to take care of then a normal convex on one side and then a perfectly flat bevel on the other. It is wicked sharp and also cool and different.
My first intro to the asymmetrical edge was an older SJTAC. I really like it. It looks a little weird at first but is very easy to maintain. Since then I picked up a Basic 7 which also has the asymmetric edge and it too is amazingly sharp. I'm a fan <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />
