I general they are limited to 60 degree climbs in controlled airspace to preclude “aerobatic” maneuver…they used to clear the STL traffic area straight up because it was the fastest way out of the TCA (anybody care to guess how old I am?..), but I think they eventually got restricted to 60 degrees sometime after I left the area. They still hot-foot it out of there though to get out of the way of the airliner traffic…there’s a viewing lot at the west end of the airfield where folks gather and watch.
S