Happy birthday to you SK and good to see you back at Punga.
Air lockers comes in bigger versions of Unimog like MogFather got the air lockers and working absolutely fine. There are lots and lots of video on YouTube showing Unimog rock climbing with their super crawler gears. Havnt tested myself on my MogFather.
Smaller version like BeeMog and DeeMog has the master cylinder to actuate lockers. That too works perfectly fine but you have to apply real force to the lever to engage lockers.