I take your point......what I'm trying to say in effect is 'many of the difficulties people encounter could have been avoided if they had performed a rollback after playing'.
It is always the best safeguard and therefore, IMO 'best practice'.
If for the sake of a 3/5 second operation you are not taking a time proven extra precautionionary step, it is not beyond the parameters of feasibility (based on historical experiences) that you are increasing the chances of experiencing a problem.
At the end of the day....do what you feel most comfortable with
