A:AnswerYes they are. I have no proof of this answer for you, but I'm sure their manufacturer and HP would end up telling you the same thing as me, I just wanted to answer you first ;)
A:AnswerBoth screens have an origami stand and it also comes with a clip that was intended to clip both monitors together but that clip can also be used independently as 2 separate monitor stands.
A:AnswerI hooked up two of them to two different laptops. I didn't need to install any software to make them work and I didn't have to accept any sort of agreements nor grant the screen recording permission.