If the birds are staying because they like it, or have some special "bond" then why clip them at all? Clearly they can't fully fly as they would naturally. It doesn't add up.
There are those who free flight their birds, but that requires lots of training and requires constant monitoring of the birds, calling out to them when they get too far. Birds rely on loud calls to find their way back to their flock (hence why they squawk all the time--its a natural homing beacon meant for large distances).
I'd say semi-clipped wings are probably a good compromise without constant monitoring. These birds will outlive birds in the wild, while still having a greater degree of freedom.
0. http://www.libertywings.com/2008/training/basic-flight-train...
1. https://adventuresofroku.com/blogs/education/free-flight-tra...
Edit: as pointed out elsewhere, wing clipping is not permanent. That's not the point.