Sorry for my bringing up an old thread, but I couldn't help!
What an interesting video!!!
As one of the casts of that video

, I'd like to add the following comments:
Actually, the snow condition of that day was very technical: packed powder covered with thin crust. I imagine that even experienced XCD skiers on leather boots and 3-pin bindings would have found difficulty skiing stably in that snow condition and some of them might have ended up with falling down and stuck their heads in the snow.

My rigs at that time were Fischer Outtabounds Crown (169, 88-68-78) skis, Salomon Xadv-8 boots and Salomon X-adv Raid bindings. I use those skis for powder and switch to Rossignol BC 70 (169, 70-60-65) for wet snow in spring.
LJ wrote:But even if it's already perfect, I feel like I could really fly with something even lighter...! Downhill and uphill... I've seen people doing it here and it looked REALLY fun...!
That says nothing more, nothing less!
When it comes to NNN/BC issues, I've noticed that the subject split up often from the beginning between two factions: while yeasayers stress sensuality, naysayers stress stability. From a point of view of sensuality, NNN/BC is really good for me.

Lightness is freedom. On the other hand, on stability, there is not big difference compared with XCD if you choose your gear wisely.
I started telemark ski seven years ago on SkiTRAB Free Rando, Scarpa T3 and G3 Targa Ascent, but I converted totally to SNS/BC last season. Though I went on ski tour on my SNS/BC gear many times with normal plastic-tele guys and AT guys, I found myself liking nowadays the slopes to which many XCD guys prefer.
I'd like to comment on more specific issues as follows:
As with the case of normal telemark skis, it may be difficult to pick all-round skis for NNN/BC.
If you ski on powder mainly, wider skis such as Madshus Epoch and Rossignol BC90 would be preferable. If you ski on groomed snow in ski area or corn snow in spring mainly, narrower skis such as Madshus Eon/Glittertind and Rossignol BC 70 would be suitable.
As for the length, I prefer the skis shorter than my body length.
There are not many choices in the market.
Crispi Jokulen or likes would be fine. I have Salomon Xadv-8.
Thanks to flexibility around ankle, you're free from cumbersome adjustment of climbing support.
Though I have experienced SNS only, there may not be big difference between SNS and NNN. There are manual and automatic types. I prefer manual one because of icing issue.
After skiing on the Salomon SNS XA throughout last four seasons, I found that the bindings were very reliable and free from frustration. Salomon has done a really good job!
As for pivot point issue during skiing compared with 3-pin, you don't need to care at all. If you are an experienced telemark skier, you won't find big difference as you make turns.
Due to low flexing resistance at pivot point, you'll find easiness in plowing through deep powder and hiking up steep slope. You'll gain an advantage in flotation on powder also.
Learning NNN/BC is not so easy.

Starting out from XC on soft snow would be a shortcut to become a good NNN/BC skier.
In addition, you may need a paradigm shift: do not telemark!
I don't mean returning to parallel AT style though.
Those guys are just applying the style of traditional telemark to NNN/BC.
That doesn't help much.
An experienced NNN/BC skier would keep a tight stance and roll with it like the following:
http://youtu.be/ITBdQtQ8-jA?list=UUdweR ... ficPoYpngA
The style of NNN/BC is rather passive: try not to control your skis actively but adjust your posture and skis to terrain and snow condition.
Actually, the guy in the video above is a professional telemark skier. I have no match for him.
The NNN/BC has become popular here in Japan in the last three years. It gets much more popular than XCD. By the way, when we say "XCD," it means NNN/BC. As for the XCD mentioned commonly in this forum, we call it something like "skinny leather telemark."
The flowing river never stops and yet the water never stays the same.