Yeah, the way I see it is that one can treat a weather-sealed DSLR without a weather-sealed lens, just about like I would a pro film camera: you don't have to baby them as much as I would an ungasketed camera full of computer parts, but you still have to exercise due diligence. It just makes it much easier.
Even if you perhaps still have to throw a plastic bag over the lens barrel and that junction with the body, it's still a hundred times more convenient to be able to just point the camera *down* than worry about water going in all those case penetrations.
That's how I see it, anyway. I don't tempt fate on the matter, but I really enjoy the not-stressing.