The attached link shows a new model for the Curve made by Case Mate. They make quality cases for Apple products and now do so for Blackberry. I have personally seen the new model for the iPhone and it is very high quality. I was impressed.
They are scheduled to begin shipping the Curve version on July 31st. It is similar to the image you provided, however both the phone and holster are covered in leather and the screen is positioned inside when carrying.
See link: BlackBerry Curve Signature Case/Holster Combo
Hope this helps,