Sounds like Pentax still hasn't worked out their quality control issues, but that withstanding he does give it a good review:
The Online Photographer: SMC Pentax DA* 200mm f/2.8 ED[IF] SDM Review
He does make some very valid points about the beauty of the APS-C format. I'd much rather carry around a 5.3", 825g 200mm then I would a 10", 2550g 300mm lens. Man that's a huge size (and price) difference to get the same field of view.