I wish I had gotten just the Holster part. Theoretically it seemed like it would be awesome to be able to quickly switch the holster position from belt to pack, but the holster was actually very difficult to slide onto the strap. The strap was also a pain to install and is not suited for wider pack straps. The camera resting pad was very awkward and blocked the buckle of the pack's chest strap and strap adjustment.
Also, when the camera is holstered on the pack strap, I found that it blocked a large part of my field of view while looking down at the trail I was hiking on. The promo videos show the models walking on flat ground looking straight ahead. The kind of hiking I do requires me to watch my footing, so the camera holstered to the strap blocking my view was just a no-go.
On the other hand, the holster in the hip position works great! I love being able to slide it on my own belt, or even just my pants. Hiking with the camera on my hip is the way to go.
I shoot a lot of low-to-the-ground macro stuff, and the pin on the bottom of the camera plate does add some height. There were a couple times I needed the camera to be flush on the ground and I had to remove the camera plate which also messed up my hand strap position.
Aside from that, I really dig the holster as an alternative to using a messy neck strap, and I like that the camera plate still allows for a tripod to be attached.