Well technically whatever you do, you always are at their mercy. But having looked at the document you linked to, it doesn't seem like having an encrypted drive

Well technically whatever you do, you always are at their mercy. But having looked at the document you linked to, it doesn't seem like having an encrypted drive would mean extra scrutiny. Unless you're actually planning on not giving them access when they ask. Which still, according to the document, should not mean an automatic denied entry.