How will the use of various formats with @font-face affect bandwidth load?

Question

Using four various formats of my web font (e.g. calculated for me by www.fontsquirrel.com) : True Type / EOT / SVG / WOFF and embedding them via CSS as such:

src: url('../fonts/webfont.eot'); src: local('☺'), url('../fonts/webfont.woff') format('woff'), url('../fonts/webfont.ttf') format('truetype'), url('webfont.svg#webfontAXSQe9it') format('svg');

... will each Browser load all of the four fonts or just pick the one it likes best?