When you click on the party frame in the Pitbull options one of the checkboxes is to show party frames while in a raid. It might be in the raid options. I know I've seen it.

Been using Pitbull for... Jeesh, probably a year and a half or more. What I like about it is that it has every option imaginable. Also, X-perl wouldn't allow me to put the party frame into a square arrangement :/