To follow this logic, then there's no need to raise your hand before you exchange baseballs w F2 after a 'dirt' ball, since it will only take an instant. Yet the pros always raise their hand...hmmmmm.
This is just a risk/reward thing for me. Takes no more time to raise my hand ever so briefly, yet any TWP on an advance is forestalled, no questions asked. So little effort, yet potentially huge reward...esp when one's BU quality can be, shall we say, 'variable.'
Small price to pay for being thought a Smitty by the 0.0000001% of specs who would actually think this. If that's the only Smittyism someone could hang on me at a FED game, I'd take it to the bank and thank them kindly.
Im all for "less Smitty-more pro," but this would have to be a small exception that proves the rule for me.