Yes, I use it. It is very easy to use and does a good job. Just read the directions once so you know how to set it up. After that, it's pretty simple.
The SU-800 is also handy for controlling other Nikon Speedlights in non-Macro work. The hardest thing to remember is to set the switch inside the SU-800 battery for normal vs macro mode (and then back again later).
I just did some shooting of butterflies at the Pacific Science Center using the R1C1 on a 105VR Nikkor.