If all your toons are in the same guild, then you would be able to access all your toons profession tabs from the guild interface. (Roster --> Sort by profession (top right) --> find your toon in the roster, will probably need to click show offline)
Alternatively I have a friend who uses Altoholic for tracking different professions on his many toons. I have not used this so I am not 100% sure of it's functionality but you might want to have a look if the guild thing does not work.
@Migari: Thank you very much.