I’ve seen Keith has this dust boot, I think he was quite satisfied with it. You didn’t hear this from me, but we’re in the process of testing a new boot design which is sturdier than the previous version, easier to adjust, takes up less X-axis travel, and has a viewing window (although no LED lighting 
).
I know lots of people gravitate towards the dust boots that mount to the router body because they’re usually much simpler in design, but I’ve always been more partial towards the Z-axis independent boots myself. Seeing as the material you’re cutting is usually flat, Z-axis independence allows you to have a much wider range of motion i.e. deeper plunges with the router while the dust boot maintains a good ‘seal’ with the surface of the material.