Greetings.
I didn't previously have a way to do this, but I just rolled it into the menu extension addon. Someone had asked a question earlier about the names of the slots, and it made me think that he was asking for this feature, so I'd started looking into ways to do it. But then it turned out I misunderstood what he was asking for, so it wasn't needed anymore.
If you also have the monkey grip plugin, you'll need to update it to the newly released version 1.01 to support the slot name changes I made in v1.33 just now. Let me know if there are any issues with it, I didn't get much of a chance to thoroughly QA test it myself, beyond making sure it displays correctly, and doesn't cause a crash (of which, there were several).
-Ramza