For protection against data theft:
At first I really good workmanship is noticed. The tape is thick and relatively rigid so that it can not be easily severed. Even the release of the "claw" (as in some normal belts also a closure, in which teeth claw into the tape) brings a potential thief 0, nothing, by an additional fuse pulling out the tape from the shutter is prevented.
Ergonomics:
As I have previously written a slight, small system camera. Therefore, of course I can not write about weight distribution or something, because there are hardly any weight to distribute. Nevertheless, the difference or the discharge of the shoulders is noticeably. Man wearing the camera much more ergonomic, sometimes entirely on that it is faster to hand. Sitting also works without having to remove the holder.
Interaction with camera:
You can tell very clearly: Actually, the whole thing for (D) SLRs designed that are bigger and heavier. The plate with the anti-slip coating for example surmounted with me - depending on the lens - almost the entire system of the length of her. This has a relatively unpleasant consequence (hence only 4 stars): With a (diameter) larger lens (like my Olympus 40-150mm) lens is exactly the zoom ring on the anti-slip coating. Ergo: Zoom then falls relatively difficult because you have to prevail over the coating. This is done by the camera does not sit exactly parallel to the mounting plate in the tripod socket, but tilts slightly forward. Whether this is due to a lack of precision of b-grip or Olympus I can not tell by the lack of reference cameras. Since the wobble on the camera but the tripod screw does not mitwackelt I assume that Olympus would be the scapegoat here. One solution would be either to remove the rubber itself in the corresponding areas or a "washer" or a tripod adapter from 1/4 "to 1/4", so you have more space between the camera and mounting plate.
What you should also keep in mind: When designing with such a small camera is the plate when zooming always in the way, no matter which lens you take (as have all the ring relatively exactly in the same place). This means you have to always embrace what is quite used to.
Conclusion: Despite the negative points a buy recommendation for those who want a great (D) SLR use a) or b) use those smaller lenses, possibly with power zoom or something. A solution of the problems would be quite simple by the manufacturer: a smaller mounting plate for system cameras! Then there would be guaranteed 5/5 stars.