As it stands a weapon or item can be taken from inventory into hands or put to inventory from hands while running. However if you are walking your movement will be stopped until the animation plays out meaning you cannot for example holster a weapon while walking. You must stop.
- Legacy ID
Running - use hotkey to holster or pull out weapon will result in succesfull action while moving without interuption.
Walking - attempting to holster or pull out your weapon will force you to stop.
This is something that comes back from Arma 2 days, but I am hoping this can be changed.