Comment by eclipticplane

    For the record, I think this will be a disaster.  There is far too much
    code that will get broken, largely silently, and much of it is not
    under our control.
        regards, tom lane

(via https://lwn.net/ml/pgsql-hackers/[email protected]....)

If Tom Lane says it will be a disaster, I believe it will be a disaster.