As little as two years ago, this would have made me notably cranky, but nowadays it's only a fairly mild inconvenience: the wifi connection here at the shop is at least as good as the one at home, so I'm actually having a decently productive (if somewhat inefficient) workday. Aside from the crappy ergonomics (the shelf I have my laptop on is practically at my shoulders), it makes a perfectly manageable environment.
It's a somewhat mixed blessing, not having the excuse of, "I'm not at the office, so I'm simply can't work" any more. But it's nice to be able to do things like this without having to take time off for it...