Viability of Tenure Blind Housing - Public forum - Planning Advisory Service (PAS)

Hi, I am thinking of setting in policy a requirement that all housing development should be tenure blind (i.e. that there is no visual difference between the affordable and market dwellings) in order to create sustainable mixed communities etc. Just wondered whether tenure blind development affects scheme viability and if anyone else has tried this? If so, were you successful and did you need evidence? Cheers,