I have a Russian Blue myself and she's has a tendency to nest on my lap but rarely will use her claws after she's "softened" my lap. a lot of my pants have the thighs all clawed up like a couch. You get used to it after awhile. It's like a bonding thing.
Cats can be trained but you need patients. Cats don't break easy, and usually the best training comes from mutual respect. Cats easily figure out the boundaries. I just don't set any since I'm a hippy with animals. She's more like my equal in my eyes.