The problem with grunge typography is that to be really excellent and creative it has to not really be typography at all. The best designs that fit into this category require a quality of uniqueness which you cannot produce with type alone. It may start with type, but if you deconstruct the type and make it "grunge" then you cannot really reconstruct it as type and preserve that character.
This is why a font like Morire really does not work. If every A looks like every other A and the relationships between characters remain the same every time you type the same letter combination, what you have is just something dull and deliberately ugly, with no real life to it.
Grunge is a design style, not a viable category of typography.