I tend to use my pocket pc's built in voice recorder more though - if we are talking scetching out ideas. I doubt I would really use any of this stuff for anything more than a way to visually work out some idea.
I wish MakeMusic or Sibelius would come out with something like this that was more in-line with what I am already familiar with. A Finale "Notepad" for PocketPC would be fantastic! But don't hold your breath for something like that any time soon from them.
MacBook Pro Intel Core 2 Duo 2.5ghz 4GB Ram OSX 10.5.8
Korg TritonLe & MAudio Oxygen 8
T3, Logic 9, DP7, K2, GPO4, Strad, Gofriller, C&MB, Finale 2010