One small addition to the discussion:
During the press beta, I had tailor & artificer and that worked pretty good, as the tailor needed jute and some leather and the artificer wood and ore. During the April BWE I chose armor smith and jeweller, which both needed ore in large amounts, so the two professions were in constant competition for "ingots".
I hope so, because so far I only know about recipes that used three out of the four slots on the crafting table. Perhaps component to the fourth slot will alter the style. Having only one style would be boring. I also hope that e.g. Sylvari can craft some of those race typical "bark & leaf" armors.Only got to about 50 in Tailor because I kept running out of crafting materials, so I'm wondering if the style will change at higher levels.