I am inter alia a washboard player (not in anything like a cajun or zydeco style). Whether you need an amp to compete with it depends on how loud you play. I can accompany an unamplified moothie so you can hear every note in the tune.

I feel like Berlioz in that quote "I love the *idea* of Paganini but can't stand his music". I want to like fusions of this sort but in practice my ears cringe when it happens. 1970s punk is in the same category for me.