Rocket seats
IIRC from my days at IAM Farnborough in the late 60's, the rocket in the seat was primarily designed to continue lifting the seat to clear the aircraft, post the initial "triple bang" charge to get the occupant out of the cockpit. The rocket doesn't contibute much to the initial cartridge vital acceleration, close to the spine's limits, to get you out ASAP and on your way, (hopefully, upwards) although it can help with vectoring you skywards in more modern ( e.g ACES) type seats.
So basically the opccupant of a rocket seat does not get an easier initial ride than his or her (non-Rocket) predecessors.
I did go up the seat training rig when it visited Cranditz in '73: the big lesson to me seeming to be be how long 0.6 of a second takes when one is waiting for something to happen.
But then again,those who have done it for real.............