I use an old mini-camera neck sling with a quick-disconnect attached to the pocket clip with a small split-ring. I find that the 4+ is too big for my pocket,and at $180, I'd be afraid of it "walking itself" up and off my pocket using the clip. With the neck sling, it fits nicely into a shirt pocket, yet "at hand" when needed.
Hope this alternate idea gives you some options. I read another thread somewhere that a web site called rip-offs or something along that line makes several different sizes and shapes of pouches for cell phones, small lights, and other needs for the film industry. You might try a search along those lines.