I had a lot of fun reading the drafts of these articles and they both opened my eyes and dispelled quite a few misconceptions.

I wish I had known everything that was in these articles a long time ago as I would have pushed the use of SQLCLR much harder.

The stuff about Host Protection Attributes, shared memory and the implications of External access reassured me greatly. My worries that SQLCLR is a great big server destabilising security leak has largely been dispelled. Obviously it is possible to write something stupid and highly inefficient but that is just as possible in T-SQL as it is in C#/VB. In fact, using the geographic data types and methods can throw frightening errors but I haven't seen it bring down a server yet.