I don't know if they had a different name but ichigo is gt 001 so I'm assuming he's the first. I think all their releases so far have had 2 heads with the exception of L. I'm fine with the practice. Bonus head with the option to make another figure for cheap.
If you want to believe asmus they don't use leather or pleather, but rather something they developed themselves
https://www.facebook.com/share/v/1tJ47LTsGE9Mi5Mq/?mibextid=D5vuiz
I've found some of the jiadou bodies to be taller than 1/6 scale which is what you would need. Other than that there was a limited run of sephiroth bodies I believe which in themselves are just gametoys ichigo bodies with a hole in the back for the wing.
As of right now: you don't. They were only on taobao and already sold out. Kit said he'll get some but we don't know how many and he's not getting any arms.
Reddit seems to say they are fine. Not surprised they don't take paypal. They take google pay or stripe though.
I searched using this:
https://world.taobao.com/item/788891139765.htm
Should pull up the item