While I do agree they feel superb in hand - trust me, I walked around the whole city for 2 days holding these swatches, testing how they feel and the way they look under different light - I ended up going with teacore. The decision was more based on usability than on just looks, though. I intend to wear this jacket as often as possible and, being in UK, that means under pissing condition pretty often. I tested the water resistance of all three of them and, while the teacore one presents a fairly decent resistance to water, the other two absorbs it as quickly as a cotton fabric. Hence my decision.
In practice, none of them is especially water resistant, the tea core included. There’s a reason I don’t own more Shinki… that’s why I’d go with the more interesting leather lol, neither is going to keep me dry so I may as well take advantage.