The product is still young, but I'm confident that it will improve quickly. The developers are very open to suggestions, and extremely helpful when it comes to answering questions.
The documentation so far is very good, but still a bit sparse in some areas. At the moment it offers excellent guidance on how to migrate sites between servers when switching and there are plenty of useful tips.
However because it's still very new, the detail for the slightly more advanced configurations such as where to add Nginx directives and examples of things like redirections is still a bit thin.
I'm delighted with it so far, and because I trust the Delicious Brains tools I have no hesitation in recommending it.