I can vouch that the Banshee Phantom is chuckable, certainly more so than the Heckler I had before. I only realised recently that the wheelbase is actually shorter than a Spitfire with 650b wheels size for size. Plus it doesn't have the floppy fork feeling that comes with slack 26/650b bikes.
Mine is set up with MRP Stage forks and Flow Ex / Rubber Queen 2.2 (loads of tyre clearance) and rides beautifully. 105mm rear, 130mm front. It is exactly the bike I wanted it to be: playful down and off things, big wheeler monster truck over chossy ground, nimble through the corners and a highly accomplished climber. It is also the first bike I've been able to manual properly since I rode a BMX!
No idea about weight though, although I suspect it is sub 30 lb based on how much easier it is to lift compared to my 31 lb heckler. With any 29er the first place to save weight is the wheels so if you can go carbon or Arch Ex size rims that would be most of the battle done. I don't have any problem pedaling it about though, even on long rides, the suspension works incredibly well and is such short travel anyway that you are never fighting it up a hill. I suspect the Kona is similar and is probably a lot down to how 29er wheels "work".
They should be landing in the UK at the end of the month (I got one early because I'm special.......and made enough of a pain in the arse of myself to Pedals Cycles in Edinburgh).
At the moment I suspect the Phantom or Process 111 are the only bikes that come close to your wishes. Not sure if the Orange Segment does anything for you, on paper it is similar to either of the other bikes. They are never going to ride in the same manner as a Blur TRc/4x, as they have bigger wheels and therefore require a different riding style, but they are certainly from the same school of thought.
If anyone who lives near Dundee fancys a go they are more than welcome to try it out (mine is large, Pedals in Edinburgh have a medium demo bike). Apologies to those that care about these things for having it in the granny ring for the photo. The shock is also on the other way round now.