From the showroom floor, no, with slicks, yes.
http://forums.corvetteforum.com/c6-z06-discussion/1794944-the-c6-z06-fast-list.html
One guy ran a 10.98 with showroom tires...
Plenty in 10s with slicks only.
But your still probably right with him seeing one run 10s on factory tires since theres only been 1 recorded... Stock one on slicks i dont doubt.