stacking modifiers ?

[witchdocter]

Does the Shm Orb from VT with the 15% alchemy modifier stack with anything ? Or is there anything better out there that adds more if it doesnt stack ?

[Maevenniia]

Tradeskill modifiers do NOT stack.

So, if you equip that 15% item and a 5% geerlock, you will receive the benefit of the MAX of the two, ie: 15%, NOT a combined 20%

[Lickity]

I can confirm that the +15% orb from VT, +10% Philosopher's Stone and the +5% Bag and/or Geerlok do not stack in an combination, I have tried them all.
(I know that no +% stacks, but I can hope that alchemy was an exception)

Lickity