Perhaps, but more importantly, did the have the requisite Need to Know?
Just because someone has a clearance doesn't mean you can disclose anything of that classificatin to that person. They must also have a legitimate Need to Know the information in connectin with the performance of their duties.
There was nothing to know here so "need to know" has no more relevence than knowing who her mother was. Most of Washington apparently knew VP worked for CIA.
Also did the CIA-critter who allegedly "leaked" the name to the VP & Scooter inform them that Plame's name/status was classified (if it was)?
IOW, even if the recipients of the classified info had clearance and need to know, the provider of the info has to id the info as classified so that the recipients can then treat the info accordingly.