Well, when we go to equip, we have the unequipped items in inventory on the right side for mouseover, & that used to show all the skills anyway.Think twice when you said this. Even experience players doesn't mean that he/she must remember all the stats bonuses of all items.
The West is casual game, not a real life, why the fxxk I need to remember all the stuff of the game in order to be an experience player?
The only thing this new method adds is item set bonuses (which is kinda nice, I admit).
Overall, though, I think there are more minuses than pluses to this change. An on/off button would make everyone happy.