As of the last conference I attended (in Chicago), I have started bringing an extra hard drive filled with apparently random data with me. I'm not actually both

As of the last conference I attended (in Chicago), I have started bringing an extra hard drive filled with apparently random data with me. I'm not actually bothering to put an encrypted version of my laptop hard disk on the spare disk and place a stock honeypot image on my laptop HD -- or am I? Either way, I like to think that I'm lending plausible deniability to everyone else with extra hard disks.