I recently purchased the BE130 Sharkskin Case. It does have a small hole for the swivel clip stud but nothing else (no clips, straps, etc). It's easy to get the GPS into the case and it fits snuggly.
I cut another hole in the back of the case so I could plug in the external power cord without taking the case off.
The main reason I purchased the case was to protect the GPS display and it does that well. The rocker button is a bit more difficult to accuratly manipulate with the case on but other than that all the controls are visable and easy to press. The plastic covering is and the overall fabrication of the case seems to be of good quality.
Hope this helps.