I don't stake mine just because I tend to reconfigure things and I carry a wrench in my range bag anyway. Never had one back off on me yet, but if it does it's an easy fix. However, if I'll probably eventually stake them all.
Mine are not battle field weapons, where I'm stuck in a sea of sand or jungle with no means of working on my rig. I have a wrench. I do not stake mine, a dab of gun-tite and I call it good. Haven't had one work loose yet.