Thanks for the nice thorough review. I have used the M324s (and cheaper Welgo clones) but wondered about the A530.

FWIW, for touring I much prefer a pedal with clipless on both sides. I do like pedals with clipless on only one side for my around town short errand beater bike because I sometimes want to hop on without bothering to change to bike shoes. On tour if I am going any distance I am in my bike shoes and for riding in flip flops crocs, or running shoes 1/4 mile to the shower or other short hops I manage okay even with tiny clipless only pedals.

Even when stopping, riding on ice, or what ever I only clip out a split second before putting a foot down. I like that in dicey situations my foot will be securely on the pedal until I actively choose to clip out. Even when I rode and raced on very technical single track I never clipped out unless and until I was actually putting a foot down. For folks who either like to be able to clip out before stopping or want to ride any distance in non bike shoes something like the 324s or 530s is probably great.