mb10 > In some places it will be more of a teaching job.
I saw such hevrusas in kollel, some are done better than others.
If you organize learning the right way, it should be good for both. A kollel student might be faster in reading tosafos, but his more mature hevrusah has life experience and can guide them to interesting questions.
If you make it simply into “teaching” then both are losing – the working guy is eating “unripe grapes and young wine”, while the kollel guy gets convinced that he is so knowledgeable already based on his academic experience.