I never used a guns safety, so I don't know how much of a must it is. Magazine loaded while hunting no round in the chamber till I am ready to shoot. Mechanical safeties can fail, empty chambers cannot.
Don't need to remove the safety just "disable" it as you cannot move it with the sight installed. I learned in the same way Alan did, building my clone on the Envoy, thanks to Alan for selling me the sight.
Dimitri