It is taking me some time to get use to the little details that is different then AutoCAD. I have been jumping projects back and forth to see how things work. In general I found it identical and my learning curve has been so smaller since I already know AutoCAD. When trying to learn other CAD program (like Vectorworks) in the past I always hit walls because how different they are and give up on them.
I even found that Draftsight is easier and more responsive to use then AutoCAD.