The challenge table was pretty common where I'm living now, even up until a few years ago. One local bar had a 6½ foot Valley that would get a line of quarters every Friday and Saturday night. That's what led me to playing APA back then. Everyone seemed to want to play by slightly different rules, and there were occasionally arguments, but they resolved quickly enough. Usually the players went over that quickly when the challenger was racking. Some refused to play "that APA slop", and since most were local and regulars, the order of who plays next usually went without much trouble too. A new owner of that place got two 7-footers, moved the pool tables to another room, and the challenge aspect just evaporated.
Contrast that to another place, a kind of a biker bar in a campground resort, always a big line of quarters, and a couple guys always cutting the line. This was a place where people often brought their own cues, and the level of play was better. They had APA and TAP there on weeknights. The bar usually had a band on weekends, and it was a great night out going there. The pool was pretty competitive until about 11:00pm, at which point it often switched to doubles, so more people could play. Lots of nights we played Scotch Doubles because it didn't give the best players as big of an edge, and nobody held the table long. That also seems to have faded off, and nobody really plays there on weekends. I don't even think they have leagues there any more either.