I just installed the dev version and was glad, that it has a native support of wptouch now. But together with the support of wptoch I found out, that Super Cache supports only the fee version and not the pro version of Wptouch.
It would be great, also to support the pro version. I can’t imagine, that there are many differences between the versions and the way they work with Super Cache and maybe it might be just the different pathname of the pro-plugin which is “wptouch-pro” instead of “wptouch”.