Customizing the Microsoft .NET Framework (Book Review)

Last week I finished Customizing the Microsoft® .NET Framework Common Language Runtime.  This book was mildly interesting with lots of code samples making it a good reference book for those writing CLR hosts within their application.  Most of the chapters discussed features from the perspective of SQL Server requirements and then an implementation of the feature.  It seems like a lot of work to leverage the full customization capabilities of the CLR with minimal benefits.  A lot of the configuration can be done via XML as well further reducing the benefits of writing your own CLR host.