Very intrigued by the setup and something I'd consider.That is where I was headed when when I came across this RPV option and figured why not give it a shot, it is a heck of a lot cheaper and easier to do, and turns out it work so so well! There aren't many examples of folks using them on late model cars, although I did find one guy who put them on an otherwise completely stock Lexus, and he was raving about it. The classic hot rodder's and many race cars use them, which is why companies like Wilwood sell them.
I look forward to when other's start doing this modification and rave about what a huge improvement it is, I have no doubt this will happen, it's that good. You know how when you first get in and start the car, and the pedal drops and gets kind of mushy? Well with these RPV's that doesn't happen, the pedal barely moves. It just gives a firm, responsive, brake pedal all the time now with much better feel (feedback) and modulation. So when you can do something that works that well, why would you want to spend a lot more time and money on a different MC?
Oh and one other thing i noticed, the XDS (electronic brake LSD) works a lot better as well. Which makes sense because if the brakes are more responsive to the pedal, it also does the same for the ABS pump actuator. Believe me when I say, you want to do this modification.
Seems straight-foward enough and for ~$130 in parts (assuming you have tools) that's not a bad option.