I have to use it on my six pack, if I put enough initial in it to idle decent then my mechanical is all in at 1800 which is way too early for my car. I run my GTO, Mach 1 and Challenger this way and they all run great. after all under no load and light load conditions you can have lots of advance it only helps , open up the throttle, drop your vacuum and it backs your timing off. makes perfect sense to me ,especially with the crappy gas we have these days.
That article really is worth reading, I can't say he's right for every car but I'm sold.