The problem is that the shear shortcut that was originally chosen was eaten up by the shortcut to switch to the scale blezmo. Changed the shortcut to CTRL + ALT + SHIFT + S which is painful but seeing as how shear in object mode has limited use, I don't think it will cause any real problems. I also updated the menu entry to match. This was assigned to Martin but he's busy so I did it... and if I did it wrong... blame him for not fixing it sooner ;)