Using clientless mode but still getting redirect

I discovered that in order for Clientless-mode to work, a APM Logon page object must be in the policy. The is my observation and not a written in stone fact. After I added the Logon page object before the AD Auth object, I no longer saw the redirect to my.policy. Additionally because I was using the iRule to put the user into clientless-mode, you do not see the actual logon page. If you don't authenticate against AD, you just get the denied page. I would be interested to see if anyone else has run into this or if having the Logon page object is necessary.