Post em up. I know many here have not had the chance to ride one, so I will write my own review later......I saw all the Never Summer threads and wanted to start my own!
I have a 2012 Never Summit 160. Not surprisingly it floats extremely well - I've taken it through waist deep powder and made it out in flat areas that many of my compatriots got stuck in. It is surprising light (carbonium topsheet) although I wouldn't describe it as super light. Flex is medium flex (definitely not a jib board... but not a super stiff freeride board either) - has a good quick snap in the tail that seems to come with carbonium boards (lke the Proto CT).
It is a setback, tapered board so you need to shorten your turns to make them a little more slashy (otherwise you run out of board on the tail end and will wash out). What is surprising is that it holds an edge on windblown hardpack a lot better than some other powder boards I've ridden (the 1st Gen Burton Fish was horrible on icy traverses).
Switch riding and jumps can be done... but not ideal for it. Same with jibbing... i've done nose presses and bs boardslides on a wide rail it as there is a park just before the Summit Six lift at Alpine Meadows - but it's that mostly just screwing around.
Other Powder boards I've ridden: 1st Gen Burton Fish (2005), Prior Khyber 156, Prior Khyber Splt 160, Rad Air Tanker 172, OSin 4807 178
I am 5'9' 150", I've been riding for about 500 days (15 years x 30 days a season - I find counting days ridden a better indicator of experience). I would consider myself an expert level freerider which can ride any pretty much run on the mountain out here in the West (there are some particularly gnarly chutes/runs that skiiers seem to like that I general avoid), can drop chutes and medium sized cornices and cliffs (5-10 feet). Here's a video of what happens when I try to drop a cornice that is greater than 10 ft...