Buff Brahma roo wi/full-size flock?

I recently found someone selling 2 bantam Buff Brahma roos (they are 2 yrs old) on Craigslist. I am seriously considering picking one of them up for my hens . I do have a question though. If I chose to hatch fertile eggs from a bantam Buff Brahma and a full-size BO or BA hen, what kind of layer would I get? Would the resulting hens lay full-size eggs or would they lean more towards bantam-sized examples? I'm sure theres plenty of people out there with experience on bantam/full-sized crosses.