I treated myself to a new board... the MBS all terrain longboard. These are brand new out from the USA by MBS who are known for their mountain boards. Where I live over summer we get nasty cat eye thorns that seem to grow everywhere so it was great to get hold of a board and not have to worry about pneumatic tyres.
I've had the chance to take the board out on a number of surfaces and given they are new out thought I'd give my impressions.
Overall I'm impressed with the board. Riding it is like going from the old 26" mountain bikes onto the 29ers. You just feel like you can roll over anything. The board easily handles uneven footpaths, road surfaces and loose stone that would stop an ordinary skateboard. I've taken it down a few grassy slopes and as long as the grass is pretty low, and the ground hard packed then it goes great.
If kiting strapless is your thing then this board would be fine on any hard packed surface.
In terms of just general cruising the board is much easier to push than a standard mountain board. On a road surface made from rock rather than bitumen there is much more vibration through your feet than you get with pneumatic tyres. Off road the vibration disappears. The board is very much at home rolling over mown tufts of grass on hard packed soil, which is what many of our local playing fields become over summer.
On smooth surfaces like concrete the board makes a pretty cool noise through the tyres due to the tread pattern. The board has got decent bearings in it so it rolls smooth and far.
I found the board length comfortable and build quality high as you expect with an MBS board.
Some pics of the board are below including size comparison between standard skateboard and MBS mountain board so you can see the difference.