It is also worth thinking about spiral stability. If the rudder trim is not perfectly centred (unlikely to be the case immediately after T/O), and if there is a slight asymmetry of thrust, the aircraft could be spirally stable in one direction and spirally unstable in the other. Lateral trim can also affect spiral stability. It is difficult to find the zero setting while still on the ground. The spiral stability of most jet transports is substantially neutral. However, if your aircraft is not perfectly spirally stable, any relaxation of attention to the bank angle could allow it to bank further than you want. I would recommend waiting until 500ft before starting a turn after take-off.