I just had my leaking exterior faucets all replaced with frost free units.

They all have shut off lever valves about a foot downstream from them (obviously inside the house).

For the winter, my plumber said to not bother cutting off the water to the exterior faucets with the lever valves, that I should leave the lever valve open and just turn off the frost free over the winter.

I guess I'm old school, and think I should cut off the water at the lever valve and then open up the frost free faucet over the winter. Maybe it's belt and suspenders but I don't see any disadvantage to what I'm thinking, and it would put less pressure on the frost free if we get a real cold snap. The pipes run just inside the cinder block walls, and I have had pipes freeze numerous times.

Any thoughts?

Thanks.
Al