Yeah, it's still a bit too unpredictable to use on anything other than motorways really, or good dual carriageways. Even then, at higher speeds it still feels a bit 'unsure'...
I remember doing 90% of the drive from London->Manchester on AP1, and never really thinking too much about it - just the usual lane changes and keeping an eye out for whacky driving from other road users... With AP2, I still get a bit tense when it goes around a corner, or it starts to head towards the left lane marking if the guard rail on the right gets a bit closer...
Not there yet...