Morning J_T, sorry that I missed this last night, I got dragged away for some mischief
My stance is based on our desire to use the FMS as much as possible. On most of our aircraft, crews don’t have the ability to “readily” find the speed charts. So while both methods work, in our case it would involve the crew inputting an assumed temperature into the FMS, finding out the V-speeds, removing the temperature and then over writing the FMS V-speeds for the actual temperature! Quite feasible to do, but cumbersome.
It’s also worth remembering that the shortest runway that we operate to is 8000 ft. So the extra speed isn’t a factor for stopping.
Mutt.