The ‘Alternates’ tab does’t appear to let you change SS for anything other than SS but you are your own boss and if you want to change it for Endurance just do it and don’t over think it, you are still turning your legs 
The ‘Alternates’ tab does’t appear to let you change SS for anything other than SS but you are your own boss and if you want to change it for Endurance just do it and don’t over think it, you are still turning your legs