I have experimented with SCOBY “leather”, and while it is fascinating to make and interesting to play with, I guarantee you do not want this shit in contact with your skin, because it (the SCOBY leather, not your skin) is slightly sticky, slightly slimy, and smells like cat pee.
Also, it’s tough while “dry” (although it’s always slightly moist), but in the presence of water – or sweat – it gets very slimy, and tends to slowly decompose/degrade/dissolve.
You want SCOBY boots on your feet, like portable trenchfoot? No, I thought not.
