Yes. I put 2 Damage and the -Res proc in EQ, and 1 Damage in QS. I also put two Psy Damage procs in Volcanic Gases.
The character isn't a major AoE damage dealer, but it's a whole sight better when running at +0/+4 or higher, and killing spawns with the procs and Stone Cages (and Tornado and LS, but that's based on the secondary), versus just controlling everyone and trying to do it with cycling single-target attacks.
If you're going to put yourself in situations where AoE is really useful, like large teams or soloing against large spawns, it's definitely worth the investment.
Anyone have good results with proccing out Earth powers with damage procs? I'm especially looking at proccing out Earthquake, Quicksand, and Stone Cages.