We purchased this extension for a client who is sensitive to access levels. The depth of what this extension does and how you can do it - entire site block, specific CMS page block (in case there are different policy pages for different geographic areas), and even product blocks that allow you to conditionally exclude products from a user's experience is all very impressive.
That said, the extension did come with some speed bumps, but, the most important thing to me is support - and these guys delivered. They stayed with me during every step of the testing phase to ensure that each function worked and that I knew how to operate so that I felt comfortable teaching the client how to use it.
I would not hesitate to buy from FME again in the future. Thanks guys!