Re: BUIS on a POF .308
Use what you have or use what you're used to. It's a BUIS; there really isn't much difference whether you're running them on a POF, LMT, or home build special. What ever you can zero in to your requirements, doesn't break or melt under your extreme end of usage, and allows you to acquire sight picture thereby placing accurate shots on target is sufficient.
Unless you have money burning a hole in your pocket or work on a two way range where the difference in deployment of the sight can make a difference, I suggest you run the ARMS until you discover a reason not to.