Unfortunately, keeping a QR code with me and making sure nobody takes a picture of it, I don't lose it, ... does not fit my usage model for such a device at the moment.
I understand what you mean, but someone could take a picture of your regular seed words for any other bitcoin wallet 
It can be a bit annoying importing QR code seed phrase each time you power on your device, but it can be faster than entering pin code each time you turn ledger hardware wallet.
For people who are making many transactions each day, Krux wouldn't be ideal option, but it's much more secure and there is nothing to hack or exploit.
I would recommend not to trust a chip/device alone, things can go wrong in a lot of ways. A physical backup is important. Also, a passphrase can save you in case someone sees the seed.
Can Krux be used in multisig setup with other hardware wallets?