I really wanted to like the SB but I didn't like that it doesn't have a full keyboard with End, Home, PgUp, PgDown. It's not that there isn't space to include them. I ended up returning it. For something that I paid $3k for it was a dealbreaker.
People actually use those buttons?! Genuinely curious.
Some folk use them for emacs keybindings for the shell (I use crtl-left etc)
Yup, I use them a lot of in Excel. Outside of Excel, End to go to the end of the line and Home to go to the beginning. Ctrl+Home, Ctrl+End to go to the beginning/end of a file.