I've had this little beast as EDC for quite a while and it finally got dull enough that I have to "seriously" sharpen it instead of a few strops on ceramic rod and leather strop. The AS is designed for punching holes and it seems that its tip area has wider angle than the rear part. I really like this design, but it's also difficult to sharpen. Also, the rear end of the blade is not grinded in a straight line and curves a little to the right side. Considering the two issues, I really hesitate to put it through the sharpmaker. How do you guys sharpen your AS?