I never do forearm exercises except for hammer curls. My forearm development has never improved so much since I started doing deads and shrugs without straps. All I use strap for now is my last set of shrugs, because I can add 100 lbs and still get 10 reps. Highly recommend chalk for deads.
Like Magoo said, if I can't lift a weight without straps, I don't quote it as a max poundage.
One more thing: if I do any extra forearms exercises, they overtrain in no time and it spills over into biceps tendonitis. This is what I base all my training recommendations on, for others.