Hey great you are using it as reference!
1. Import is almost done, not far away at all
Check out one of the latest tests (caution: slightly nsfw)
2. For now you can change the sky brightness to black, saving you some cutting out by using photoshop's select color tool.
but i do have the ability to save out as a 32 bit tga, i just haven't exposed that button yet, but may do in the future