I don't like it. Its not a visual manipulator, its a code editor. I found trying to simply turn a brick and put it on it's side an all day job with hours of research to find out what the code means.
If it had rotate, scale, and vertex tools replacing bare coding, I would enjoy it.
Its as easy to use as going into the BLB file itself and changing the code there, just without a picture.
I am disappointed.