Consider the force and breakage issues with a vang for cruising. A good squall with it down tight and watch for schrapnel! Broken boom possible too. In a gust without it, the sail lifts to release the power. When you are reefing and forget to release the vang while in the turmoil of reefing in gusty wind
(and you will) you will risk sail or boom damage as well as possible injury. Great as a preventer for reaching in light air though if you make it attachable to your toe rail... You probably know all this already, just seems like a Vang on a Liberty 458 is a little like headers on a school
bus.... do you need that extra 2%? No slight intended though. Cruised with a couple who had one of those beautiful boats. Very nice and high quality.