I had one for a year or so. Nice bike, pretty fast, quite comfy.
I sold it for 2 reasons - A medium was a tad too big for me really but a small would have been way to small, and it couldn't really handle the short offroad sections of my commute
Now, that's partly due to the 28mm Bonty road tyres I was using which were giving me grief with punctures, but when you've got mudguards and a rack fitted (Mine was geared not SS) is the biggest faff imagineable getting the back wheel out to fix a puncture in the dark and it was that that made me get rid of it.
If you're keeping it SS, fitting cross rubber, and not fitting mudguards it will be better, but for me the droputs are just too much of a compromise, especially with gears, sorry.
It also felt quite high up and a bit nervous offroad too. I replaced it with a £200 Carerra Subway One, which is MTB based, suits me a lot more and is hardly any slower on the road at all. If fact if you take the whole picture into account (Offroad bits, bumping up and down kerbs, cutting through traffic) it's probably faster.
If I wanted another 700c commuter, I'd go for an Edinburgh Bicycle Co-Op Revoultion model of some sort. They do a lovely cross bike for £400, and several others including a Nexxus bike, for less money.