You are 100% correct about the entertainment aspect of .. well .. entertaining.
It's your perogative, of course, but remember this;
"Schtick" will alienate you from people that know what they're really doing,
such as Marc Savoy (and if you're serious about playing a Cajun accordion,
you really should know who Marc Savoy is.)
If you walked into his his store with such a monstrosity, you would likely
be ushered out quite rapidly.
Just a friendly note of caution from your friends here ;-)
And, as some have experienced, you can be ignored for no apparent reason.. or snubbed, or he can be out and out rude... no matter the size of your "bellows".