Thank for those comments/observations.

My thoughts are:
1) This would be a poor investment because of the associated costs of maintenance and insurance vs. practical daily/monthly use. The costs of operating when used.

2) Such a conversion (taking out approx 1/2 of the seats) and loading it up with people and gear could be achieved quickly.

3) Every USA location has school busses.
A) Know where the local school bus "Motor Pool" (if your state uses public owned busses) so that a bus could be "appropriated" if TSHTF.
B) If your state uses privately owned (Louisiana for 1) school busses that are chartered, get to know one of those owner/operators and work out an agreement to make use of the bus if TSHTF. Knowledge of a safe location to Bug Out to, equipment, situational and survival knowledge, etc, can be exchanged for the use of the bus, aka: teamwork.

4) This would make the use of a bus as a BOV, a more practical option.