Its ok for a total throw it together no idea project. I get its not going to be the best, and will probe fail, but I kinda like these things where people just throw stuff together!
Its very simple, and if the welds are good, very effective. It looks ghetto and may not work as well as a properly designed tubular, but results are the proof of the method...
I've done it before. It works. Nothing more to say.
If it's done well no reason it wont work effectively. These guys are the douchers that slammed a ls400 by taking the springs out and replacing them with hockey pucks. Comfort slams.