My opinion; No, probably not !!! - Why??? - Because as I understand things, there is currently no way that current TS2010 MP beta testers can roll back from 46170 - 45607 - 45467 to 44088 without doing a complete new re-install (& patching to 44088)...
They have already lost "compatible mode"... I'm sure they wouldn't be to happy if they also lost all their downloaded "fault free - TS2010 Native mode content" that they have downloaded/imported into their 46170...
Maybe N3V could offer the MP beta testers that have been "actively" reporting faults/bugs a discount to upgrade to TS12... Basically, rewarding them in a small way for their effort !!!