I was up and running at home by about 2pm, and started taking calls. The only material difference in working form home is that I didn't have the luxury of extra monitors and had to view everything through the little laptop screen, but that proved to be only a minor inconvenience. And of course I lost the ability to bother the techs in the adjoining cubicles with questions (since I'm fairly new on the job), but I got along OK.
So I'm looking at the positive side. I'll save time and bus fare with zero commute - that's more free time to spend at home doing as I please, which is not a bad thing.
Another plus is that I'll be able to take a nap on my lunch hour!