theoretically not as you just need to replace the hotfix file in the .\i386\svcpack - folder. the name is a false friend here as it does not work the same way it does on service packs. sorrowly. practically there is the problem (or can lead to a problem) i mentioned above, that there in fact are hotfixes that replace some files. anyway, with /integrate on hotfixes the source is not up2date, but the installation will be.