That's actually a pretty important point - as the guy on our team who runs Windows, I see issues that the rest of my Mac-using team doesn't, which is important,

That's actually a pretty important point - as the guy on our team who runs Windows, I see issues that the rest of my Mac-using team doesn't, which is important, since a majority of our traffic comes from Windows machines! It's always a bit painful when you run into a site that just looks bad on Windows, and it's obvious that it was an all-Mac team that didn't bother to cross-platform test.