I fought it off for a long time too, but switched about 6 years ago. I love the stuff.

Noise? Shifting problems? Umm, ok. None here. Granted, it's not any better lube than wet, but it works just as good for me, and it's a lot easier to deal with incidental chain contact to legs and fingers. The drivetrain gets a little noisy when it's time for more white lightning, but that's only every 400 miles or so.

It may vary by region or something. I live in Austin, and only ride in rain a couple times a year, if that makes a difference.