JcRabbit ...pretty well summed it up, thanks, Jorge...
There are several 'shell' replacements/alternatives out there which provide other, different options to that afforded by Explorer.exe and its subsequent enhancements.
Any of these shells still benefits from such proggies as Windowblinds and others. Since the beginning of Windows-skinning people have used alternate shells as well as Windowblinds in particular...as part of a whole skinning experience.
As Frogboy said, we're all about supporting ALL skinning.....particularly in as much as we [skinners] are [or should be] interested in all facets of skinning.
There's more to [skinning] life than just walls and icons....