Nope. It's on use, and doesn't stack with other on use trinkets. Since it's 480 on use, you can time it right, making it BETTER than other professions. However, if you have an actual on-use trinket, it's locked out. Thats a bad thing. Be better all around if it was a straight +80, instead of on use.Fact is engineering is balanced now with every other profession and offers essentially the same +80 stats