We recently showed up at a local electrician's shop at 6 in the morning to do a survey on Anti-Short Bushings. The manager handed out the survey to his team of electricians and the general consensus was that redheads are a must with MC Cable. They feel it's a safety hazard to not use them, even if they are told they are not required. We're going to be posting the results soon, and we'll let you know when they are up..
To take the anonymous survey yourself, click here http://www.anti-shortsurvey.com/.