I first got the lp in the '60s, bought a Japanese lp in the '80s and have the cd now. Never noticed the squeak. I hope you haven't ruined a favorite for me.
If the music is good the costume doesn't matter unless it is used as a way to get the audience into the music. Sometimes this works, sometimes it doesn't. Everything else is ephemera.
This reminds me of a story from my Jazz Record Mart/Delmark days. I'm in the store playing the New Tristano, the phone rings and the caller identifies himself as Leon Sash. He asks who's playing in the background and I say Lennie Tristano. He says "I didn't know Lennie was in town". After I explain it's a record he says "you should talk to my wife, Lee Morgan". I probably did laundry that night.