In Inspiration I either do brainstorming/idea-rearranging in the graphical mode, or else outlining in the outlining mode. I still use a word processor for my actual writing. (I've got a really big computer monitor, so I can use Word and Inspiration side-by-side.)

However, I've heard of other writers who end up doing all of their writing in Inspiration itself -- at the end they export their work to their word processor for final polishing. The most well-known writer in this category would be Arthur Golden (_Memoirs of a Geisha_). I guess the point would be that in Inspiration's outline mode it's extremely easy to expand and contract whole sections of your "outline" -- say, an entire chapter -- which makes it as easy to rearrange large chunks of prose as small ones.