I use the tip mechanic in situations where the defensive touch is not really obvious. I have never had an evaluator or clinician criticize its use as excessive or unnecessary.
I don't see how it can be a bad thing - it helps communicate, and minimizes potential heat from coaches.
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HOMER: Just gimme my gun.
CLERK: Hold on, the law requires a five-day waiting period; we've got run a background check...
HOMER: Five days???? But I'm mad NOW!!
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