I know I know, another question about Artillery.

Will the men of an Artillery Crew be interchangeable? I.E Everyone will spawn with a Sponge, or a Wad-Screw and thus be able to man every part of the Crew? Or will everyone spawn as a different Cannoner? I can see the advantages and disadvantages or doing it either way, just curious if we will need 7 men to man a single gun or if the actual number will be much lower.