I noticed on Sunday, I didn't bring a back pack in, but was asked to empty my pockets and lift my jacket and turn so they could see the waistband of my pants. Saturday, they just checked my backpack. I was wearing the same jacket both days. Saturday they just poked through my bag.
I wonder if they had an incident of some sort on Saturday?
I think it depends on who was doing the searching. There were two women on Sunday when we arrived who seemed to be pretty into it, as opposed to the guy on the other table, who just waved us through (we didn't have bags).