While I kinda knew this had the possibility of becoming a "ford v chevy" topic, and I may have had have my opinions going into it, I also consider myself rational and capable of being swayed by logic.
That being said you may be happy to know my views have slightly changed. Going into it I was all about the split loom. I typically work on things that i need to tear back apart wire and rewire a few days later. However on my dart I'm going for a stock "looking" car (ie original am only radio, with hidden bluetooth/mp3 stereo.) That being said I'm going to split loom anything I think I might need to tear apart, but tape it once I know its "good."
