I wasn't on the tour, but I do have a super quick review of a SurgeX that Dave modded for me.
I have great power conditioning (UberBuss), but no surge protection. Since my locality has frequent brownouts and such, I needed to address this issue. However, I was very reluctant to introduce another component, especially one that would negatively impact the sound. After speaking with Dave, he suggested that I grab a used SurgeX off ebay and he would mod it for me. OK, I did that, and Dave offered several options for mods. At first, I didn't want to spend a lot of money to mod a "cheap," used surge protector, but after my experiences with the Furutech GTX receptacles, I realized that if I want to "do no harm," I need to outfit the SurgeX with some really high quality materials. The first thing was to replace the single receptacle unit with a GTX-Gold that I happen to have lying around. Dave replaced the power cord, IEC, and caps. Once I got it back, I plugged it up, let it burn in for a few hours, and sat down to listen. I was stunned by the fact that not only did the SurgeX not do any harm, but it actually made my system sound significantly better! I wasn't expecting a cleaner sound, more detail retrieval, more realism, etc. Sure, it cost a bit more than I budgeted, but once I plugged it in, the cost didn't matter.
If you need surge protection, I would wholeheartedly recommend that you chat with Dave to work out a SurgeX solution.