Share access cookie

So I have a webtop that has all the portal resources/webtop links and SAML resources working just fine. The virtual of course, needs a rewrite profile for the portal resources. This is called for arguments sake, webtop.company.com

What I do want however, if for the links / access to these sites to work exactly the same. i.e. the relative URI's must stay in tact and one access policy must control access to all *.company.com sites. What I find is that if the session.server.network.name / [HTTP::host] changes, it insists on creating a new access policy session. I want to stop this.

I have got this to work for a a non-webtop APM enabled virtual with an access policy that has a .company.com single domain cookie that sends say websitea.company.com to a pool with various settings. If i logged in to the persists across all the services. Really happy and this is what I want but what I am trying to do is get this to work on the same virtual as the webtop. Is what I'm trying to do possible? What I want is that if someone already has an APM session, they will go directly to the full HTTP link of a specific site.

Here's the irule on the non-webtop virtual that works a treat:

when ACCESS_ACL_ALLOWED {
    log local0.notice "WHEN ACCESS_ACL_ALLOWED: [HTTP::host] URI: [HTTP::uri]"
       switch -glob [string tolower [HTTP::host]] {
        "jira.company.com" {
            log local0.notice "jira found papa HOST: [HTTP::host] URI: [HTTP::uri]"
            COMPRESS::disable
            set http_path [HTTP::path]
            pool /CorpWeb/jira.company.com_int.app/jira.company.com_int_pool
            WEBSSO::select /SSO/sso-basic
            switch -glob [string tolower [HTTP::uri]] {
                "/" {
                    if {[HTTP::method] equals "GET"} {
                     log local0.notice "In Jira root and the method is a [HTTP::method] : [HTTP::host] with URI [HTTP::uri]"
                     HTTP::uri "/jira/secure/Dashboard.jspa?os_authType=basic"

                    }
                   log local0.notice "original path    
            }   
            }  
        }
        "wiki.company.com" {
             pool /CorpWeb/wiki.company.com_int.app/wiki.company.com_int_pool
             WEBSSO::select /SSO/wiki-forms
        }
         "office.company.com" {
             pool /SSO/apm.office.company.com.app/apm.office.company.com_pool
             WEBSSO::select /SSO/sso-basic
        }


        default {
            default_pool
            WEBSSO::disable
        }
    }
}