I do use it for everything, don't believe the rubbish about they are only meant for snow and sand.....and that they are slow.
They roll really well, 26" rims with 4-5" tires come out at 29" and that means they roll quicker and over everything.
I have done almost 1,300 mile on the moonlander in 8 months, and its been on xc routes, beaches, mountains (where it climbs better than suspension bikes etc) descends like a suspension bike as its like having 4" travel front and back in the tires!
It's fantastic on the moors, flood plains, rock gardens....obviously excels on sand and gravel too.
I have been riding it to the beach, taking it splodging then ride it back, as its so comfortable, I prefer riding it over my hybrid too, so it's been doing lots of cardio and basically a hack bike type affair, shops, messages etc.
Look through my ride threads on moonlander, pugsley and mukluk and you see what I get upto on mine.
Remember, people use these for the 135mile arrowhead races and 1,000 mile idarod challenge etc, they are bombproof and easy to live with, just bizarre at first.
2014 surly straggler
2012 surly moonlander
14 badboy 14 carbon beargrease 13 jones spaceframe 14 straggler, 05 pugsley, 13 pugsley, 12 moonlander, 13 krampus x2, 13 fargo 2, 11 surly pugsley, 01 Volvo Cannondale, 01 dekerf limited, 98 cannondale caad2, 94 san andreas, 96 san andreas, 93 pace rc200 f3, 08 Ti moots rigormootis, 93 Ti merlin xlm, 09 Ti jeff jones spaceframe, 93 fat chance yo eddy (ex dave hemming), 11 salsa mukluk, 00 scott octane, 03 stumpjumper comp, 07 s-works fsr carbon, 08 revolution triad 2, 94 claud butler kylami, 96 cannondale m500, 93 townsend, 07 scott scale 30 carbon, 92 CR dogs bolx, 09 hooligan 1, 99 trek 6500, 10 badboy