The widgets are really useful. Your apps will not be very different if you use them with the same theme every time but I think it's ok for a demo to show customers during the Problem Interview phase.
I agree that the state model is a bit overly complex but if you go past the learning curve it can work well. Also there are ways to kind of bypass it and use an approach more similar to what Backbone/Spine does. There is a recent blog post by the SC team that shows you you can do that with 2.0 branch: http://blog.sproutcore.com/sproutcore-2-and-ajax/
The widgets are really useful. Your apps will not be very different if you use them with the same theme every time but I think it's ok for a demo to show customers during the Problem Interview phase.
I agree that the state model is a bit overly complex but if you go past the learning curve it can work well. Also there are ways to kind of bypass it and use an approach more similar to what Backbone/Spine does. There is a recent blog post by the SC team that shows you you can do that with 2.0 branch: http://blog.sproutcore.com/sproutcore-2-and-ajax/