Hi, did you visit this link
https://goo.gl/forms/owhz8lDHY84hzNGh1 ?
There, you should see images like the ones attached here to this post.
They most certainly have UI designers

but that's not really important. If I can bring something new and interesting to the table I don't see how they could not hire me.
And to answer your third question, I don't worry about Live 10, I'm not trying to sell them features, I just want to showcase my design skills and how I think.
If you need anything else, please let me know, I would be happy to explain.
Cheers,
Nenad.