I use the accumulater to protect the engine during hard braking and corners. I just use a simple open line. I tried the electric valve, but it didn't work as well, and it failed rather early. I use a HV
oil pump, so I don't have any trouble refilling the accumulater.
I overhaul my engine every other year. I beat on it so hard, that I want to take measures to prevent a catastrophic failure if I can. So far, the inside of the engine has always looked really good. I could probably go 3 years on a rebuild.