Never used one.
Its probably a lot like using a christmas tree for trout: you'll probably catch fish but you'll barely feel them hit or fight compared to when using a lighter setup.
With a bit more patience you can catch the same big bass with a single jig and plastic minnow as you would pounding the area with an bama rig...and it's really exciting when the fish hit. I think the main advantage of the bama is in tourny situations where your time is limited and you want to make your target immediately visible to as many bass as possible.
If there's something to be said for the bama rig it's that it has correctly identified the feeding habits of many big bass...With temperatures in Canadian lakes on the rise you'll find the biggest bass schooling baitfish deep. that being said though these bass will hit a minnow/jig combo even if they're keying in on schools...just like trout and walleye.