I really dunno about both versions of the casters. Cygnar doesn't need yet another infantry destroying caster, and cryx doesn't need another parasite caster.
The feat is amazing with the 3" push, just don't plan for much focus as thats not the point. To get someone in explosion range they'd be within 14" of him, not good. Its a threat extension. I feel that its deadliest use may be having him charge something to the side feat, and drag away all the models in front of their caster so you can fill him full of lead, just don't mess up the order.
I feel the Cryx one is probs a bit stronger in faction as the threat makes banes retarded. NTY!