Fixed 4 wheel chassis or swivel wheel?

[Skiptonlass]

Right, I'm probably going to shell out for an emmaljunga (winter baby in Sweden)

My choice now is the fixed wheel or the swivel wheel chassis? Fixed wheel is good on snow and rough ground or for long walks, which I intend to do, but navigating the shops /town would seem to require a swivel wheel.

So. Anyone got one of these? Any advice? Are the swivel wheels (lockable) ok on snow? Am I setting myself up for failure with a fixed wheel??

And does anyone know if you can buy an extra chassis alone? Asked the girl in the shop but she wasn't very helpful and there's no customer contact details on the website!