I looked. Didn't see it... So I'm posting it.
With the Lockpicking Glyph rogues can get... This actually speeds up your opening of everything. Unless in the patch EVERYONE gathers quest items in 1 second... It appears like the glyph has upped my opening speed of everything other than mining/herbalism.
Today I'm doing Preparing the Salve in Helfire Pen. and I'm gathering these plants in a second... Small exploit maybe? But I can gather them before nearby aggro has a chance to hit me... Then vanish.
I would take my glyph off and test it... But I don't have enough money yet to buy another one. Just rerolled horde and money is tight atm until I get my mounts.
Anyway, if the glyph is why it works... It's my attempt to keep from bein' a leecha.