put usb drive in the safe.
I wouldn't personaly trust a bank but thats what the encryption and backup redundancy is for. Which begs the question "Why pay for a Safe deposit box when there are so many free backups in this plan?"
You might already have a safe deposit box (if you don't I'd have to agree - don't bother). I also don't trust banks, but keeping just one copy in your own safe is more risky than keeping multiple copies in multiple locations.
Here's one thing I've thought about, and I'd be interested in hearing opinions on it: next time you're on holiday outside your own country, take your laptop with you, use SSL, and create a few new web-based email accounts (ideally using webmail providers outside either your own usual jurisdiction, or the "holiday jurisdiction". When you get back email your TrueCrypt-ed wallet to these new email accounts. You can easily get access to your wallet from one webmail account if you need to, but it's not obviously your account, and your own government is faced with dealing with a webmail host outside its legal control. (I'd also suggest an alternative, such as buried-in-a-bottle... just in case...)