I agree julian... the T1 as easy and as fast as a traditional wetsuit.
It has a fabulous swim like fill. It is very less fatiguing than most traditionally designed wetsuit. But, I still wouldn't (nor couldn't) say it's the fastest nor easiest to remove. To do that would deny that the Piel design exists. Speed and Ease are quantifible comparison standards.
This is the direction for removing the Piel. Pull up on the two zippers as you exit the water. Run to bike - period.
Two sources for video comparisons can be found at...
http://www.t1wetsuits.com/specs.html http://www.tri2go.com/ What you will notice is that the Piel wetsuit removal is shown in actual transition conditions. While the T1 removal is shown in static position. There is also a side by side removal video comparing a traditional wetsuit removal to the Piel (although, that video is a bit of an overkill in marketing hype). I think what you notice is that the Piel is much easier and faster to remove than any wetsuit. What it doesn't show is that the Piel is not as near as comfortable as the T1 (or some traditional designs as well). The Piel is stiffer than most wetsuits, can be fatiguing and lacks the various size options as the T1.
Does ease and speed of transition really mean anything? Not really if the triathlon is a long course (such as, 1/2IM or IM). On the other hand, if it's a F-1 or Sprint distance... it may make a difference for some.
FWIW Joe Moya