Can Ground Zero in Rad Armor crit from hide?

[Pzn]

I'm trying to make a stalker that has a decent amount of extra AoE in the secondary.  If ground zero can crit from hide I think I'll go with rad but otherwise I'll go shield.  Hopefully someone here has experience with rad on stalkers and can answer my question.

[KellionBane]

No. Only primary abilities will crit.