I've neglected actually leveling professions (enchanting aside) for the moment. But what I have been doing is still gathering. I still have a miner and i just run him off to grab a mine while my others are still going about their business. IMO, as long as its not your primary doing the gathering, its worthwhile to have that bank full of materials whenever you decide its worthwhile to level someones profession.

Although, space of course becomes an issue, but I've got my own little guild just for me, and I'll be buying up those guild bank tabs for the extra space and ease of trading between my other 5 box teams.