Crew Skills Compendium

[Phrozenn]

This might have been asked already but does anyone know if you level up a crew skill and make something BoP like the http://www.torhead.com/schematic/9VQXpQM do you know if you will still keep it if you decide to unlearn your crew skill and switch to something other than biochem?

I remember back during the Sunwell days of WoW when people who were dedicated enough would level up enchanting to enchant their final BiS rings, then drop enchanting and relevel up their old profession to regain the old benefits of it while still keeping the enchants on the rings.

Thanks in advanced.