+1 crikey
as one who works as an foottherapist, insoles, problems with nails etc, i only see trouble…
1. destoying the natural fat in forfoot, and heel, that works as cushioning.
2. no support whatsoever, if you pronate.
3. high risk of getting a achilles heel.
But they are splendid for eating chips on the couch, going to the beach, if you hate stepping on seashells, not slipping when you get home drunk 😆