Re forces, yep once at terminal velocity for the attitude there is no vertical acceleration, in other words the forces up and down match so drag/lift component vertically = 1g. Gravity is pulling your backside down with 1g and the reaction from the a/c via the seat is 1g. Same as in cruise. 40 degree roll excursion may spill some water though.
If a ND input acted to increase vertical speed, sensation of weight would have decreased as you accelerated downwards reaction from seat < 1g as the difference gives the net acceleration. So if the stall warner sounded then you might conclude you were on the verge of stalling. If you think that then clearly you can't be stalled now can you.
