That's actually even worse! If you lose 1 part, the whole thing's gone. Never do that!
Have you even taken a minute to think about it or just straight assumed it's wrong? The thing is it's a 2 out of 3 scheme, you need to lose 2 parts out of 3 to lose your seed phrase.
Sorry; misread. I thought you'd recommend splitting 1-8, 9-16, 17-24.
As gmaxwell said, though, I don't understand
why. There are so many good guides for setting up Multisig with basically any software and hardware wallet and combination of them.
A nice side effect is that you can deposit dummy amounts on each individual seed to deter any thief / finder to go looking for a second seed.
And also..
it just works, it's integrated into wallets and it's a popular scheme, so if someone has a problem with setup or restore, they'll find help online without a problem.
I can also guarantee that they would find less users who know about this '1-16, 9-24, 1-8 + 17-24' scheme and who will be able to assist.