Originally Posted by
Uplinker
I must be the only guy who looks to see if any pins/locks or pitot covers are actually installed on the landing gear or probes, rather than looking in the cockpit !

I know! Funny thing is, if you missed them on the walkaround, I hardly think an item on a checklist that (on a NB in mentioned short turnarounds) is answered to almost by reflex (cause they're always on board, save for the mentioned cases) is going to prevent you from taking off without them.
Check Airman has got it on point.