Makes perfect sense to me. As I've explained numerous times, the /integrate switch simply leaves both uncompressed files in i386 (the updated files) and edits svcpack.inf to run the EXE from the svcpack folder to create the registry entries. So yes, you'll have the original EXE size plus the added size from the uncompressed updated files. And yes, you should do my pack first since mine puts a new version of svcpack.inf in i386 that you don't want overwriting the version with /integrate.