here are my stats: showing that i have no on hit healing equipped besides euphoria: https://streamable.com/pjhty1

here are two in game tests showing that euphoria is not healing on hit: https://streamable.com/8gcejq https://streamable.com/o627z8

also, the "Quickdraw" skill which states:   has no noticeable effect on skills after swapping weapons. it also does not affect swap speed as far as i can tell either. if this perk has some other function, please enlighten me. otherwise, i believe it to be bugged