For the sake of leveling, no, you don't really need it. If you want to upgrade them later, you can worry about it when you're higher level and can solo it all more easily. Relic armor will be a bit more difficult to get due to daily dynamis restrictions and the need for zone clears. Emp gear is probably first priority once you are 99, though. The composure bonus is just too good to not have when it comes to extending buff durations on others. But in terms of sheer enfeebling prowess or even fast cast, you've got a lot of ilvl options out there now.
Violence good. Sexy bad. Yay America.