Would Like Clown Pass to Include Label Information

[br3ttman]

It'd be really helpful if I could have the option to have labels with alpha channels show up in my clown passes.  I'm often placing pad-print, silk screen, and/or laser etch logos and text in my renders.  If they could be "clipped out" as part of the clown pass, it'd sure make for quick selection and post-editing in Photoshop.

-Brett