I purchased three of these mobile walls to assist in sound reduction in my shared office where I do some sound recording and engineering.
These are extremely lightweight and very easy to break down and store in a small corner of my room. The pole in the middle screws together from 3 segments, so this makes it easy to store, but also makes it very flexible in terms of set-up: you can have 1, 2, or all 3 panels together at once. I've only used it as a full wall, but the option of having a smaller sound wall is cool as well.
This is a great solution for lower-budget, non-permanent needs. If you're looking for a more high-end solution for a built-out studio, then perhaps this isn't the best option for you, but I could see this working well in a live room recording area when you need to have more modular sound panels/deflectors in different areas.