I own two.
First, a gold covered Brobucker. It is a Custom Shop offering, so I was able to just order it through a SD Dealer.
My second, which is more of a commissioned build, is a reproduction of a Fender X-1. For it I called the Custom Shop and we discussed what I knew about the X-1, also the guitar and position I was installing it in. I made some notes, and then filled in and submitted the online CS pickup order form with the details from our discussion. The CS reproduction is faithful to the tone of the other original X-1 in my guitar, a 1981 Fender Lead II. It is also my favorite single coil pickup. This whole process was super easy and I felt like the CS wanted to ensure they built exactly what I needed.
So definitely worth it for me! I am even considering a SSS Strat loaded with 3 CS X-1's.