The Linnstrument captures the dynamic range of strike and release velocity, as well as pressure and aftertouch direction; translated to MPE (MIDI Polyphonic Expression).
As someone with relatively small hands for piano, I have been enjoying the wider range of intervals with one hand provided by the Linnstrument's layout.
Try remapping it so that the Command buttons, i.e., the keys next to the Space Bar, are Control. This was the position of the old Symbolics machines. To my hands, it makes Emacs much more efficient, since the rest position for the thumbs can be between the Space Bar and the Control keys.
If backup files are giving you an issue, you can change the behavior of emacs so that it saves backup files in a separate directory, instead of the alongside the file that is being edited.