Decide which key combination prefix should be dedicate to destructive/dangerous commands

[vemv]

Either primary-secondary, or primary-shift. But don't use both styles interchangeably.

Too easy to try hit p-s-F (search), and hit p-s-D (unconditional delete) instead

[vemv]

• I'll use p-t-X for all destructive operations
• primary-secondary-X, primary-shift-X will be used interchangeably for non-destructive ops, trying to prefer the former