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I know there are sublime text plugins for VI bindings (I think they are the same as Vim bindings), and it is also highly customizable with plugins.

I had difficulty getting into lighttable for some reason.

Vim bindings include Vi bindings, but Vim bindings is more.

Light Table is very alpha, so at the moment it's really not a serious candidate to replace Sublime or Vim. Will see what happens. :)