It depends who you know and what connections you have.
I know of someone who has aquired a prohib licence in the last few years, but it is rare and there is no official way to do it. The person I am refering to is a range officer at a gun club that shall remain nameless, he has years of experience as a firearms instructor and verifier. A member turned in an illegal prohib pistol to him (a horrible little .22 revolver, with about a 10lb of trigger pull). Rather than destroy the pistol he contacted the RCMP and convinced them to grant him a prohib licence to keep the revolver for "educational purposes".
I also met a retired "E Division" RCMP officer once who had an awsome gun collection. After talking to him for a while he mentioned that his retirement gift, from his boss, was a concealled carry permit.