1. Yes
2. No
3. Sometimes but rarely
4. Yes - I almost always copy the styles that I want to use into Composer memories as a part of the song setup. Then I use the panel memories to select the appropriate Composer memory while I am playing the song.
5. No
6. No

I use eight or more panel memories for each song, that are set up with appropriate rhythm and voicing for the portion of the song I am playing. That gives me access to every rhythm and voice that is available in the entire keyboard for the panel memory that I am using at that time. I increment through the panel memories as I am playing, using a foot pedal. I seldom have to look at the keyboard when I am playing because there is no need to poke at buttons while I am playing the song.