[paul-woolcock]

Putting the standard key bindings for vi is one thing, but without being able to customize it like vim, it's almost worthless to me. The custom bindings I have set are there to do common operations, and they become an integral part of my vim.

[mmavnn]

It does actually support a limited .vimrc - depends a bit what types of custom bindings you want.

[bmj]

Agreed, but if you are forced to use VS2010[1], it's nice to have the keybindings.

[1] Yes, you can survive without the IDE if you are doing .NET development.