I have what I think is Restrepia contorta(bought as antennifera from Andy's but there is a second tag with penciled writing that seems to be a correctional tag...) it was in a 2 inch pot. I took it out of the pot since it seems pretty tight in there and thought it might like to ramble on a hygrolon mat w epiweb beneath.
I've heard of people doing leaf cuttings but don't know how it's done. The ones I've bought had a leaf buried down half down in the medium and I think that was how they propagated them but I'm not sure.
Mine grow keikis a lot, with tiny roots starting. Basically they are stems starting from the base of a leaf then going up to a higher leaf. I've never had any luck trying to grow them on when they've fallen off though.