I gave my Claymoar FQE a go again for another public solo... how did I ever play her with a Locust?! CLAYMOAR!
Glad to see another one saw the light! 
Kidding, glad you're having fun with her 
The Locust-FQE was my jam for the first 2 months I played this game. Enjoy your ClayBore, but there's no need to disrespect a classic...
You're the one disrespecting a fine grill as the FQE by giving her a small, little locust instead of a Bigg Boomstick O'Death to play with
(and yes, it's written with two G).
This is the ONLY way to play a BF3
Not it's not! 
AR has no place in a BF3 build. It stops you using Carnage, which should be spammed, either for Armour Damage or to detonate ammo. If you're going to make a weapons build (where AR becomes highly desired), use a basic human soldier. You're not doing justice to the awesomeness that is Carnage if you just play it like a basic human. Any points in AR are wasted points on the BF3, imho.
As others have already said, you can take bonus power on AR. The tradeoff is that you'll go down when an enemy sneezes, but oh, the carnageeeeeeeeeeeeee (pun intended). Obviously best done with the High Lord.
... I'm starting to sound repetitive, am I not? 