I would like to edit my past statement about safety of lockring wheels. Please do a complete inspection of both the wheel and lockring before putting it back together. If either part looks the slightest bit suspect to you...rust pits missing bits of edges or rounded edging do not use.

I had one get away from me today. Fortunately it was chained down and didn't cause any damage. After review I concluded I had no business using that rim in the first place.

So safer than the rh5 split in the center yes but still requiring safety precautions. Chains, Wall(to stand behind), and remote fill are all good ideas.