Will it be possible to model buildings in this, and import them into the game? I am learning blender as well, but sketchup seems much more flexible to me for building buildings.
UV mapping: Yes.
Rendering: No.
You need to make textures though.
I believe Sketchup automatically creates UV maps? Because you can apply textures with Sketchup if I'm not mistaken.
I'll be careful and not promise too much, but I guess I can check the free version of Sketchup, SketchUp Make, and create a little guide on using it to create models for Cities Skylines, just like I plan on doing with LightWave and other tools in my pipeline.