I know what you mean about the aerocatches being rather large. They're cool but take up a lot of real estate! I have a set sitting here on my desk that will end up on my new hood sooner or later, once my heat extractor vents from Maier Racing get here and I get off my butt and order a new glass or CF hood to put the vents into.
I may end up selling the aerocatches though, as I'm leaning towards a pin on hood for function over form. It's so much easier working under the hood when you can just take the hood off and set it aside yourself.