Re: removing css?
Ha! Thanks. I did suspect it'd be a pretty big deal, and I may not drop all of it. There are a couple of classes that both Bootstrap and Foundation use for very different purposes that are a little tricky to override (display:inherit!important; can only get you so far).
I've just been trying to set up an X-Cart skin that we can easily integrate with our in-house style system so we aren't starting from scratch every time we set up a store.
I'll comment here to report what happens for posterity.
X-Cart Version: 5.2.17
Modules: Varies by site