Can I use a 3x10 or 2x11 front derailleur on a 3x11 drivetrain?
In case someone else finds himself/herself in my shoes, here's how it all turned out for me... so, the previous FD was a 2x9 Shimano Altus and it still managed to move the chain from one chainring to another. Since there was no 3x11 option with a different type of pull, other than front, i took a chance and ordered a 3x10 Deore SLX. Besides the usual min-maxes which cause chain rubbing, i also have some chain rubbing when on the mid chainring with the 2 largest sprockets. Otherwise, shifting is good, 9/10 it happens without any delays or the chain getting stuck between gears. I am still observing the behavior of the whole setup but as far as front derailleur goes, 3x10 seems to have ~93% compatibility with a 3x11 drivetrain. Thank you all for your time and answers.