boost mobitools mobile cache

Hi,

I'm looking for a way to cache pages based on role or theme.

I have a site set up using mobile tools to switch themes depending on PC/Mobile and then within Mobile adjustments are made for the various carriers.

The site shares the same content in most respects, but has different layout and structure between mobile and PC, and the different mobile carriers output slightly different formatting (it's for Japanese mobiles).

I tried using boost, which was awesome but as my pages use the same urls, it turned the mobile pages into the PC pages.