However, both of those solutions ignore the branding aspect. You don't want to make your company use "Internet Explorer 6 for Application Compatibility", because that sounds like an acceptable, normal choice to make. You instead want them to use "WARNING BIOHAZARD ISOLATION AIRLOCK BROWSER FOR KEEPING SUCK AWAY FROM COMPUTERS," or something equally poignant. Using it, or even looking at it, should convey the "stay away" signal just as strongly as spots on frogs or stripes on snakes.
I use it at work to test our sites against IE6. Boots in about 5 seconds and runs IE6 as well as can be expected.