Can someone try to convince me that it's not a great winter bike please?
Sorry Paul I love my (non disc) Day 01, because it's nicely balanced, very comfy, feels lively, ...
My concern is the weight/feel of the frame. Maybe it just looks heavy, Reynolds 520 should be 531-ish shouldn't it?
...ish Depends what you're used to. Mine is around the 10 kg mark. Not light, but doesn't feel heavy in use.
Straight forks, harsh ride or not?
The head angle is fairly slack so the ride isn't at all harsh. (I once spoke to somebody working for Claud Butler who claimed that straight forks work better at damping than raked ones; I don't know enough about metallurgy to be able to verify one way or the other, but the Day One forks are no cause for concern.)
I'm fairly useless at track stands, but the Day One is so nicely balanced that even I can manage quite well (sometimes).
The important bottom line is that this is a fun bike. It isn't my fastest bike (although it keeps up OK); it's not a touring bike (but the bike and I enjoyed a short tour in Normandy this year); it is surprisingly versatile and easy to look after (although IME easy maintenance leads to higher standards and takes just as much time as any other bike) .
Mine is set up 42/18 free and 42/17 fixed, and I switch between them regularly. I'm thinking 42/16 might be better on the fixed side.
The original Continental Cyclocross tyres are puncture magnets, with a special affinity for Hampshire flints. I didn't get on with the supplied saddle, and fitted a B17. Mudguards and rack make it versatile. All my bikes end up looking remarkably similar.
You are very welcome to a ride should our Hampshire paths cross at any time ...