After reading for the 10th time, I have the answer (although not a direct one): "calls to lock by the same thread from within dynamically nested scopes are safe -- the variable will remain locked until the outermost lock on the variable goes out of scope." The answer is yes.

In reply to Re^2: advisory lock status when calling a function, with use strict by ISAI student
in thread advisory lock status when calling a function, with use strict by ISAI student

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