The Henckels Friodur is quite easy to hone, and gets wicked sharp. It shaves just like my best carbon steel razors, except it does not patina or rust. The mirror finish does accumulate oils, but rubbing alcohol quickly restores the mirror finish.

I don't see the point of using carbon steel for razors. Not that I have any issue with rust, but because they don't shave any better than my stainless razors. On average, my stainless razors actually shave better.