By the way, the majority of my hand wound chronographs have colum wheels and like you I prefer them but the 3861, although cam actuated, is very smooth and SUPER accurate.
I already did an on the wrist test of my Apollo 11 in SS and also my Moonshine. Both of these watches have the new caliber 3861. After 1 week, the Apollo 11 in SS averaged +1 sec/day and the Moonshine was + 4 - 5 secs after 1 week so less than +1 sec/day π