It really, really feels like a toy. It is very light. The mouthpiece weighs next to nothing.
I played it a bit. I've played an alto trombone before, but I do not know the positions and this will be a project for me. Initial impressions were good about the sound. I could really see a lot of high schoolers buying this mini to learn alto. Of course there isn't too much demand for alto trombones, but that's another story.
I anticipate alternating between this horn and my regular tenor during band rehearsals. I usually play during rehearsals.