I have the fortitude adventure, got some cascadia 29er mudguards from the states on ebay, cost me about 60 notes, but worth it for full coverage of mtb tyres.
I changed the bars and grips, wanted something a little wider and fatter grips. The crank was pretty crappy, so I swapped that out for an xt I already had, which also meantswapping out the BB. I also had to change the seat post clamp, it came with a really cheap crappy thing that kept slipping. I have also had a few rear spokes break, they are not butted, so will be rebuilding the wheel sooner or later.
I think it is fair to say the finishing kit is as cheap as you can get, I paid 700 quid for mine, so still a reasonable bargain. But at the RRP it was rather overpriced.
But the frame itself is quite nice, and the whole concept of the adventure model was exactly what I was looking for.
Does the singlespeed have the mounting points for mudguards?