Posts I've seen on Social Media alluding to a plan for the 1/5/5A and X1 to interwork shortly resulting in a mixed MAX/Sapphire Streetlite allocation have jogged my memory about the 5/5A services at Stockton...

Am I right in thinking that 1552/56/59 are still 'banned' from being allocated to the 5/5A, being allocated daily to other, less strenuous, services such as the 15?

I'm sure it was around a year ago now that I heard this to be the case - with two buses of the weekday PVR being covered daily by lower specification buses such as Cadets?