I have a MAK and after a while you can spot the 9mm/9MAK/380 cases. Just a matter of getting used to looking for them. If you take a sharpie and mark the bottom of the MAK cases that will make it easier to sort them out. I got a pack of 6 or 8 different color sharpies from Wally World and use them to mark 9MAK brass as well as different load combos. It will come off when cleaning the brass but otherwise seems to stay on well.
Only trimmed a few 9mm to MAK length, I decided it's just as easy to buy S+B or Privi ammo for case donation, but I still need to sort them out.
Also since the MAK are larger DIA sizing them back to 9mm takes more effort than sizing a 9mm case, so you can feel ooppppssss MAK case.
I don't want to side track the thread into another Lee FCD debate but,
The FCD is behaves different in 9mm because of the case taper. The ring at the bottom has to be big enough for the bottom of the case so if adjusted properly it will not cause issues.
9mm base .391, neck .380 so unless it sizes the bottom to .380 there is no need to remove the ring it can pass over the neck and bullet.
Like I mentioned earlier some people like it some don't, you never know until you try it. Is it necessary no, but I feel it is unfair to say people who like and use it are using a crutch and using it to cover up "problems" that should be fixed not bandaided. It's still a sort of free country so everyone is entitled to their own opinion.
I loaded lots of lead with my Lee dies no issues, but I hear the M die (and clones are nice.
I load 9mm on my Hornady LNL progressive and never lube the cases, never lube on my Lee turret either.