[mosburger]

I use Fluid (http://fluidapp.com) for a similar purpose as Nativfier... it's because my brain is hard-wired from years of use to equate Cmd-Tab (or Alt-Tab) with "task switch." My brain thinks of e-mail as a separate thing from my work (editor and browser), and I personally don't like conflating my browser with different tasks like e-mail.

I know I could just learn Ctrl-Tab or Alt-{ or whatever to cycle through dozens of tabs, but Cmd-Tab works for me. Different strokes for different folks.

I'll probably check Nativfier out because Fluid hasn't been updated significantly in a while and uses an old renderer, and it's a bit laggy w/ HuBoard (the front-end to GitHub issues that we use at work - it's pretty JS-intensive)