I think this will be a big improvement over the conventional spring clip. I'm for the 45 deg. option too. I know these are prototypes but if I can make a suggestion on the plate that contains the clip. Please move it as high as possible on the plate you have and round the corners as much as possible on the bottom where it protrudes. That will make it as comfortable as possible and not wear a person's jeans. I did something similar using the spring plate for an Izula which I wear at 10 o'clock or so, on my weak side. I turned the plate to a little less than 45 deg and drilled holes through for the hardware. It didn't take long sitting realize the corners needed to be rounded as much as possible, that is a surprisingly tender area.