Hello there.
I've never tested it with that plugin before. It doesn't do much to modify equip slots, only making it so the second weapon slot can also hold shields, so I don't think there'd be any issues. You might have to change around the load order and see if it works better one way or the other, though.
Of course, if there is any compatibility problems, you can always post about them and I can take a look to try to fix them, too.
~Ramza