Nice Tony. I do almost just like that quite often. I see you must be a performance biker too with some nice Zipp 808's.
One thing I do that I highly recommend. I got some BBQ covers (cheap from walmart), and I wrap them around the bikes, and hold with a cinch strap. Takes just a moment but what that does is it allows me to slide the bikes into the back without any worry that grease from the chains or scuff from the back tires will rub off ont he upholstry while inside the plane. Very much worth the extra step.
Another small step I often take is to remove the pedals because there too they go in very easily if they don't have that horizontal platform to catch on. I travel with road bikes, mtn bikes, my tt bike, all on various occasions. One thing I have enjoyed a few times is to fly to a far away tt, ride my bike out of the airport gate to the tt as a warm up, then ride back and fly home. Two hobbies in less than the time of one.
Erik