Skybox blending question

Just a question to know if this is possible or not.

I’m making a game where the main character would be traversing a number of different landscapes, and I would want the sky to be different for each one. I wan’t it to gradually blend and I also do not want to change scenes

Is making multiple skyboxes for one scene feasible?
Is there a way to have X amount of cameras with X amount of skyboxes and fade in/out of each camera view as the area changes?

It’s certainly possible on reasonably recent hardware. You need a custom shader to do it, but there’s one here that looks like it should work.