Just a word of warning, if you pick this skill as an engineer you have to give up your mines or ammo pack. I can't go anywhere without my mines. I figured you could just hit F and get healed. Nope! You also have to buy the heals with resources.
You don't have to give up your ammo pack at all, it's always available, regardless of what you have in the Utility Slot. Just switch to Mana Turret mode, press "B" and you will switch to ammo pack mode. Pressing the mouse button will now deploy an ammo pack, instead of building a turret.
Also, the resto/med packs are a universal utility. If you don't want to give up your mines or ammo pack on your engi, you can still use the restoration or medpacks on your other classes.
