Re: leather wrist guards
I have occasional problems with my wrists as a result of arthritis and some nerve damage which has caused a carpal tunnel type problem, so when it is acting u I wear a soft brace which is made by sport aid in kansas. It works well for nikkyo and koteoroshi (kotegaeshi), but doesn't go far enough for yonkyo (although, if someone is experienced enough to do a good yonkyo, they should have enough control to avoid hurting you, unless they are malicious!) I only wear them when I absolutely have to. I am usually fine.
e ya later