i rode mine to bath and back this morning, dodging early hailstorms under railway bridges, that sort of thing.
it's a real mile-eater, very comfortable and fast.
a couple of things - with mudguards and overshoes the toe overlap is a bit nasty. it's perfect as a load-carrying machine, but it took a bit of getting used to the change in centre of balance and the heaviness of the rear of the bike; being used too light whippy fixed wheel, with stuff on my back, it changes how i ride.
the brakes are good, but need a bit of fiddliness to get them adjusted. never used v-brakes before, good stopping power.
i swapped the saddle (the specialized assripper that came with the bike) for a rolls straight away. i also flipped the stem, but i really don't think this made a tiny bit of difference. i did it anyway. just so i could say, 'i flipped the stem'.
i'm riding it with a 15t fixed cog and the 42 stock sugino chainring. i think this works out at around 74", which is fine as long as you not fully laden and aren't doing anything too hilly. i have a 16t freewheel on the other side.
i also swapped the rear tyre for a 28c slick gatorskin, and the front for a 23c hardcase, both of which i had lying around.
it's basically a fixed wheel touring bike now, and i am mightily impressed with its capabilities, and a little staggered at how spectacularly cheap it was.