Ah, gz-decompress the stylesheet itself, ok. For what it's worth, in my profiles of pageloads in at least Firefox I haven't seen gz-decompression of stylesheet

Ah, gz-decompress the stylesheet itself, ok. For what it's worth, in my profiles of pageloads in at least Firefox I haven't seen gz-decompression of stylesheets show up in any noticeable way, but I can believe that it could be a problem if you have a lot of data: images in the sheet...