It was my understanding that rolling G was limited to two thirds of the normal G limitation of the aircraft (so a 2.5G limit is reduced to 1.65 whilst rolling) - although I’m not 100% sure that applies to transport category aircraft, but it does apply to FAR 23 certified aircraft.
Certainly the G limit whilst rolling is NOT the same as the G limit in wings level flight.
In the UPRT simulator sessions that we do, there is a focus on rolling G and in fact the UPRT functions of the simulator give cautions to the instructor if the pilot conducts a recovery that triggers rolling G over a pre determined threshold.