If the forks have the clear coating from the factory remaining the Purple Power type Cleaner (Castrol SuperClean as well) will remove that clear coat with a soaking. Just have to wash the parts really well as that is a strong alkaline cleaner.
Removing it by hand with sanding takes some time.
FWIW.
I haven't seen Nil's work personally, from the looks of the photos it seems like it would be a bit of work to take the darker peened silver matt finish to a polished finish. I am probably mistaken...Yes, cutting through the oxidation is needed either way and the Vapor Blasting does that for you. I won't be having any Vapor Blasting done for a few years at least...
David