I jumpseat on them all the time. They are load restricted constantly. Thank god USAIR has the jumpseat included in the OEW or I would not get on many times. They don't make it in the winter. Jetblue could not make it from JFK to the West Coast in the winter with the A320. Used to stop in SLC all the time for gas. The A321 is regarded as a huge pig at USAIR.