If you use that EzSBC voltage regulator, just be aware that your machine will make a loud farting noise when you turn it off. Just an FYI and it's actually normal.
That said, I do have some of the Kahr boards on all my WPC route games. They are there just for insurance purposes so I don't have to worry about them randomly resetting while on location. Once I bring the game home I pull the board and use it on the next WPC heading out on route. I do not use any here at home. But if I'm hosting a party or tournament and one starts to act up, I'll throw a spare on it to get me through the day.