I've ridden voile and burton split boards as well, and anybody taking thirty minutes to switch them over is a moron. Or doing it for the first time ever. Even back in '94 when the sucked, it took max of five minutes...
Ascent skis are very short skis with a binding compatible to your riding boot. I use K2 clickers, and i have K2 clicker compatible ascent skis. They are a bit longer than snowblades, and have full sized skins like a fatboy ski would use, plus kicker plates-things that lift your heel up.
I infinitely prefer ascent skis/snowboard to split snowboards. I can ride with my preferred deck depending on conditions, with my favorite bindings. All of the gear is about the same weight as the burton split and a pair of burton bindings. Plus it really is a much more versatile solution. (don't need 'em? leave em!) As ascent skis are so much shorter than any snowboard i can ride, i can manuever around rocks and along ridges much more easily. I can still kick and glide and do my tele turns if i want as well. My experience with split snowboards is that they tend to get screwed up in the inside edges really easily. Supposedly the new burton split fixes this problem, but i am not sure myself.
ps: we're negotiating with couloir, frequency and snowboarders journal about an article on one of our upcoming trips. Should be in a spring issue. I will let you all know when i know which one it will be in...