Thanks for your thoughts. I received mine today. It is a very nice device. Can’t wait to shoot some videos. I had purchased a Zhuyen Smooth Q but returned it. It was probably user error, but I couldn’t get my iPhone X to balance. I also didn’t like the spring holder.I just got the Osmo last night. I have the Apple Leather case, and I can get the phone to balance with that case on the phone.
That said, I do not think the Osmo would scratch the phone. It is held in place with a rubber material.