Hello,
I did really like separating the 3D view control (space mouse) from the selection (normal mouse). It seems like it would become very productive if I could get more hours of seat time. However for me since I am an infrequent user, I could not get enough hours using it to get comfortable. As for using it for only the Cell Editor (librarian role), I don't know if the use cases specific to mapping and aligning would justify it's usage.
Sorry I was not much help,
Jerry