As of Sunday, only two airports in the country, CLE and Houston, have installed whole body a.k.a. "naked" imaging scanners in passenger security lines. At CLE, there appears to be one full-body scanner in each security checkpoint...all other scanners are the normal ones.
This morning, I was directly behind Phil in one of the security lines, and he had to go through the full-body imaging scanner (ha!) while I walked through a normal one. Despite a short line overall in security, he took five minutes longer than me to walk through because of the extended time the new scanners take.
I'm not sure if more of these scanners will be added in the future, but if not, I'll do my best to avoid them so I can get through security quicker (and not think about someone checking out my lady parts).