I'd say just give it a try. I boxed for 1,5 year with just 1 wowwindow visible and I love it to have my slaves windows visible now. It's usefull for very basic things, like where slaves are after a fear, when a follow breaks etc.

I do have the slavewindows reduced to about 1/16 of my 22" monitor with Firefox with WOWHEAD running next to it. Especially the wowhead part is awesomely epic awesome etc. I can awnser most questions in guildchat or my own within 10 seconds. Quite helpful.