Logically I know I should, but the thought of having double or triple the seed phrases to securely backup and keep track of spread geographically “in the real” fills me with dread.
Discussion
Even if someone found 2 of your seeds, they wouldn't know which wallet it opens, so you can afford to be a little more relaxed with how you store them
This is true, though I’ve even lost track of split single-sig in the past! Honestly, you have to regularly revisit these things (yearly, at least) to keep the neural pathways fresh.
Toying with single phrase backup with a simple translation or one-step change stored only in our brains. That way you could just hang the thing openly on the wall in complete security. There’s risk however you cut it really, mitigations down to personal preference and capability.