My mage was about 6 days with PLing. If I did it again I could get it down much less as well - the first 30 levels I just dicked around and after that I spent a lot of time figuring out the best spots and ways to level. I also did quests and instances for fun along the way when I was bored with the alts of guildmates. When I hit lvl 50, I stopped powerleveling and just leveled regularily. In fact I actually did most of my leveling post-50 in instances like UBRS, Strath, LBRS and BRD. I actually got my Magister's Robe at lvl 53 and had 7/8 magister's at 57 before I could even use it. By the time I was 60 I actually had about half of the dreadmist set, half of devout, and 7/8 magisters.
Based on the xp rates I was getting, I could probably get it down to 3.5 days from 1-60 without really changing anything besides not wasting time. Half of that is just lvls 50-60 which take the longest by far since healing becomes less effective. In the forties I was doing 1 level every 2 hours. In the 30s I was doing 1 level every 40 minutes or so.
It took about 1.5 weeks total to go from 30-60. I would usually play for 5 hours per day just because it got so boring I couldn't stand any more.
I've heard that since I did this they've nerfed some of the spots I used, so maybe it wouldnt be as easy.
BTW JM5k, I dont think travis did 6 days, I remember it as 9 days.