I don't know if I would be so quick to jump on the "never ever ever without proc" boat. I know that if I've been stunned for a while or something mid fight and I'm sitting at 90+ force, I will use Maul without the proc, mainly because full force is wasted damage potential, so you might as well use our hardest hitting attack to spend some. Same goes for using Shock without 2 Induction stacks, not ideal, but if you have a full force bar, why not. I would only do this in the above mentioned scenario, as Blackout alone is not enough to justify an unprocced Maul. Basically, if you can spare the 50 force without gimping yourself, then I would say go for it. The "without gimping yourself" part is the key.