Why carry 2 katanas?

Excuse me, but I couldn't help but notice the two katanas you're carrying. Could you perhaps elaborate on why you're carrying two of these traditional Japanese swords? Is there a particular reason or purpose behind it? It's not a common sight to see someone walking around with two katanas, so I'm quite intrigued by the rationale behind your choice. I'd be very interested to hear your thoughts on this matter.