Not really a problem... does "app" conflict with "home" in your case? If so, then there's also an issue here... if not, then why not? Also, if not, then why not take the same approach to query strings.

    var querystring = {};
    //add actual querystring (prior to #) parameters
    //add hash's querystring, overwriting any already defined keys
    return querystring;

It's not that hard.