I have Sublime Text 2 and Skim installed along with MacTeX and LaTeXTools on my Macbook. I think this setting is really great, especially because Sublime Text 2 supports Vi commands via the 'Vintage mode'. But in addition to that, I would really like 'instant preview features' like the gummi LaTeX editor. (An example image of 'instant preview features' here.)
I'm willing to give up my current LaTeX working enviroment, if I can have instant previews, that work with a text editor that supports Vi commands on my Mac. (My Mac OS is Mountain Lion.)
Does anybody know any tools, apps, or libaries that support such features?