Has this been addressed yet? It seems the 'switch to desktop' urls are followed and indexed by search engines. Could this be fixed by putting rel=nofollow on the links?
I stopped using the mobile pack when I saw the mess it made. I'm still trying to get Google to forget &wpmp_switcher=desktop on several of my urls. But even after disabling the plugin, using Webmaster Tools to remove all the urls, disallowing the indexing of that variable in robots.txt, and putting in noindex,nofollow meta tags for $_GET[wpmp_switcher] - it still re-indexes a few of them at later dates. Such a mess.