"Q, Can I have 1 (work) desktop with muse, word and photoshop and the other desktop with my (games) knights of the old republic etc?"
YES. That's the beauty of this Feature & why I tried to convey that it is more than a variation on Alt-Tab. You can put a different 'group' or 'family' of related sites in each. For example and only an example... I have one w/ Outlook, Skype, Calendar, communication stuff, my 'office'... another w/ Home page & whatever others... another w/ all my IT forums & sites.... another w/ all the sites related to a recording artist of interest to me. Only thing I am not sure of is how many there can be or whether there is a maximum. The start menu & taskbar remain constants; just one of those...