Caching WP touch version of site

I have supercache and wp-touch running on my site artofmanliness.com. My desktop version runs blazing fast even with a high traffic load because of supercache. However, my wptouch version is super, slow. (We get a lot of mobile traffic)

I’d like to be able to serve cache version of the wptouch pages when people visit my site via a mobile device. From what I understand, the way supercache deals with mobile sites is that if it sees the page is getting accessed from a mobile site, it doesn’t deliver the cached file and bypasses directly to the noncached mobile page. That’s a great solution, except if you get lots of mobile traffic.

Is there a way to modify the supercache code so that supercache realizes that it is generating a mobile site and save the cached file in a different directory than the non-mobile site? And then serve that cached file when someone visits the site via a mobile device?

Thanks for any help!