One skin, 2 index.html files?

I've developed a desktop oriented version of Material. I'd like to have LMS serve this up as "http://ip:9000/material/desktop" But LMS by default will (I think) only serve up index.html and files with a "html" sub-folder. So I could have "http://ip:9000/material/html/desktop.html" - which does work, but does not look that nice.

Is there anyway to have LMS use an index.html within a sub-folder? e.g. I currently have

MaterialSkin/
- HTML/
- - material/
- - - index.html
- - - html/
- - - - desktop.html
- - - - js/, etc.

I'd like to have:
- HTML/
- - material/
- - - index.html
- - - html/
- - - - js/, etc.
- - - desktop/
- - - - index.html