[actionscripted]

Think what s/he's saying is that it helps that they use their own tools for UI dev versus those who hammer on the browser and made comparable tools, not that Firebug has a better UI.

[dubcanada]

That's fine, but I think it's a bit far fetched to say that the people who work on WebKit/Blink developer tools don't use the developer tools.

[paulirish]

It's true.. the Chrome DevTools are a webapp, and the engineers behind it use the DevTools _on_ the DevTools as their primary means of development. (Enter inception joke here). From what I can tell, the same is true with the Safari Inspector and the IE F12 Tools.