I’ve got over 3000 miles on my Fargo now and i absolutely love it. (1st gen ‘Fun Guy Green’ one.
Built with 3×9 using 105 shifters, deore touring chainset, tiagra front mech and xt cassette. I run 46cm Salsa Bell lap bars which are ace and bb7 road brakes. I had the wheels built strong with xt hubs on Flow rims 36h rear 32h front and i use it mostly as a road commuter/winter bike as it just eats up potholes with it’s 2.35″ Big Apple tyres (pretty much any 2.4″ tyre and below will fit comfortably). I tried it offroad and it was fun but obviously not a ‘proper’ mtb although it’s more than fine for bumpy towpath rides and badly maintained back roads.
I run a SKS Bluemel full rear mudguard (available from Germany in the 65mm version (around £26 posted) which gives loads of room even with the Big Apples). Front guard is more of a faff with the brake calliper but is fine with a bit of fettling. I don’t tend to run a front guard though as they always seem to rattle a bit and its a pain to fit in the car with it on.
Ton, i may be in Leeds in Feb for the Evans ride with a mate and could bring it up if you wanted to try one (although mine is the discontinued XXL which is a monster but you’d just about be ok on it)?
Of all my bikes it’s the most versatile and the last one i’d give up.