I have both vyn and paa so I will test this throughly with a variation of similar/same enchants, with 1ql tools, with high skill, same ammount of total actions on same stamina level and queues. Also going to throw some weapon enchantments on some of them to increase the number of enchantments to see how that works out. Not going to post any conclusion, just results.
EDIT: It is simply taking too many actions for any enchant loss to happen, so I am giving up on testing this. 3ql iron pickaxe 27botd havent lost any after 500 mining actions, neither has the coc woa counterpart. 3ql 23botd went down to 19, 3ql 25coc 30woa 50frostbrand went down to 24coc 25woa 49frostbrand. I prepared a lot of pickaxes to test this, but at this rate I dont want to go any further since I wont be able to get any reliable results unless I mine thousands of times with each of them. If I continue to test some of the pickaxes, I will put the results here