>>1428732can confirm that p-clamps work, been using this setup for many years.
I didn't know those adapters existed, though. I'll probably cop just for ease of removal and installation if it should ever come up. p-clamps have worked like a champ but installation was slightly tricky and I've noticed some settling/slight twisting over the years. it's not enough to stress it but the adapters seem like a better solution and cheap enough.