Originally Posted by Montanaflying

You are not like every other passenger, you are exercising, with the consent of the Captain, your privilege as a Jumpseater. Where you end up sitting is beside the point, you gained access to the flight via Jumpseat privileges. It takes a few seconds, it is professional courtesy to atleast introduce yourself...
If you're too overwhelmed to break from your checklist as 150 pax slowly shuffle into their seats, perhaps you shouldn't be running a checklist.