Right, you can dual spec in the traditional sense of 4 (or 3) pieces of one kind of gear (str, dex, int) but you can't use gear of more than one type unless it's 51 and you are 55. So for example, I have a 55 mage that is 129 str, 149 int and 2 dex. With proper boosts I can wear 55 str gear, 55 mage gear, or go 3 str 1 int (wand) that is 51. Which means I can use bodyguard helm and shield, lvl 51 fury plate (which I happen to have from these farming runs), and a gemstone wand. The problem with switching around is in the number of loadouts (you really need a 5th or 6th to make it work more quickly), but with the extra int I can go from "lvl 51 wand pally" to full 55 mm blast staff set in one move.