Well possibly it's that the BiS rogue enchant went from berserker to mongoose. I had to go farm Kara the other week to get mats and the pattern. It's rather annoying to have to use a BC enchant.
My holy paladin has been using the +30 Int (weapon) enchant ever since I learned about it - and ever since I make 250g a week or so selling the scroll. Best ten minutes I ever spent farming for a rare drop...
With the new stat weights for 4.0.1, the +35 Agi (2h weapon) is competitive for use on the stat stick of a SV hunter, and its glow is a different color than everyone else's glow. So I went back and completed a dozen-quest chain and soloed Mechanar and Botanica, just so I could do half of Arcatraz to kill one mob for a basically guaranteed drop. The scroll doesn't sell as well as the Int one, though.