Looking at the profile of the landshark edge, do you think a KME sharpener could sharpen them?
Give them a call. Ron demo'd the knife sharpener on my Treeshark and it worked great. Unfortunately, he knows what he is doing and I do not. I have to stick to the KME BH sharpener and more conventional BH's.
Last I heard, they were not great, they are supposed to working on something that would work for the simmons type heads, but I have not heard anything more about in a few months.
Dave has an awesome sharpening system for his heads.This has given me EXCELLENT results on my 100 grain Land Sharks.
http://www.simmonssharks.com/sharpeners