>> Maybe it's a requirement that ushers have to be jerks!!
 
The Lynah ushers are in general invisible (which is good).
Students routinely walk down their section's aisle and then cut
across fourteen sections to sit with their friends, and since Lynah
is bench seating, nobody cares.
 
There was one memorable usher in my student days who was a
complete jackass, known for example to throw an entire row
of students out of the building because one or two were banging on
the glass.
 
In general, though, Lynah staff is fine.
 
- Greg