That can be a bad idea. Consider the case of you having revealed the contents of a truecrypt partition to the feds. You can't actually prove you showed them eve

That can be a bad idea. Consider the case of you having revealed the contents of a truecrypt partition to the feds. You can't actually prove you showed them everything. There may be circumstantial evidence against you or the fed may be misled by some other factor beyond your control... or you may forget passwords or even lose security tokens. With deniable encryption, you may be guaranteeing yourself a treatment of the "rubber hose" with no way to say "stop".