The SQL database engine is incredibly quick to install yes, but I'm not going to really complain about that. Considering that when installing SQl Server on Windows it can take a good 20-30 minutes, plus restarts. Yes, i know you you're probably installing SQL Server, SSRS, SSAS, SSIS, etc, but still, I was very happy that I had SQL Server up and running in the space of about 2/3 minutes.