You don't have to open your web-browser ( Internet Explorer, Firefox, Safari) to use the browser-based Trader Workstation. You could have a desktop shortcut for it the same way it is for the standalone version. The icon will be in a different color than the one for the standalone so that you could have both shortcuts.
Follow the instructions in this movie to have the ease of login of the standalone version and the convenience of the browser based platform right on your Desktop
This movie is destined to users with the operating system Mac OS X.