Honestly they're a PITA alone to get them to line up. It was a lot nicer with the ex yesterday, having a second person.I love those adapters man.
Many of the ones for floor jacks are magnetic and I see why -- stick it on the pinch weld then jack. But complaints of forgetting them on the vehicle after the job.
That said, they work really well once positioned and if it means not causing costly damage, it's worth the effort.