After a couple of day's preparation the cabinet appeared on a Friday. A few days went by with no apparent work done (a hole remaining). They came back and filled in the hole and powered it up on the following Thursday. So it was just under a week but included several days with no activity (although they were installing a number of other cabs during that time).
Interesting - pretty quick then!
Will be interested to hear how long before it shows up on the checker and you can order it!