I understand the alch but I don't see the JC.

Icy Prism?

Thats a joke you get almost nothing from it from what I see. You get a sure gem from a tansmute you get most junk from the icy prism. Also it dosnt benifit from specilization like transmutes or tailor does.

Tailor in cata if there are cloth cool downs seems a lot better to me, if gold is yur goal.

I have one JC and all the profit he makes is from cutting jems. You have to buy a LOT of ore just to get him his recipies if you dont do dailies.

Im going Alch on all then some tailors (least one of each specilzation, probably more), a few that make the titansteel bars, and one of each other. Who ever left going Enginering for PvP / PvE.

Im up to like 140K (and I started with zero and have only 9 alch right now) and will make more now that I got most of the JC recipies out of the way. Thats mainly by selling gems and the high end armors, all types.