(The same rule should obviously also apply to the pilots up the front).
Well, most types jettison the doors the crew used to enter the cockpit in the first place, so that shouldn't be an issue. The S92 has huge cockpit windows and if you couldn't get out of those you a) wouldn't be able to get into the cockpit in the first place and, b) if hypothetically you could enter, you would be incapable of moving the cyclic freely when seated
