That's the whole story Cris! They like thier accordions loud and with the tuning they use I find that they sound harsh. But they play music more similar to Irish music. I prefer the mellow sound ie cajun style and being most are miced, up to a point loudness was not my thing. What ever floats your boat I say. Don't pass a good accordion up just because it doesn't blow everyone out the room acousticly.
Re: Reeds and reedblocks - a question for builders
Sidney Brown from Lake Charles appears to be the father of the modern cajun accordion. the WRITINGS section at savoymusiccenter.com has a lot of information, Especially A HISTORY OF THE ACADIAN ACCORDION.