Best Professions for TBC that will also be good in WOTLK? (Feral DPS)

There seems to be a consensus that the 2 best professions in WOTLK for Feral DPS are Engineering + JC; and in TBC I read that the best one is Leatherworking.


I really don't want to level up a profession just to throw it once WOTLK releases. But I also don't want to have 2 "weaker" professions on TBC.


TL;DR: What is the best choice for 2 good TBC professions that will also be good in WOTLK?


I was thinking on JW + Leatherworking, or maybe JW + Alchemy. Or should I just go with JW + Engineering?