No, air impingement ovens are MUCH BETTER for a slice operation as the airflow can be directed more at the top of the pizza with less to the bottom. While regular pizzas are baked from the bottom up, par-baked slices are cooked from the top down. If you P.M. me your e-mail address I'll be glad to send you some pics of a top notch slice operation employing this method.
Tom Lehmann/The Dough Doctor