shocks
My opinion would be that it would be much the same as a piston in a cylinder bore. There is blow by, but compare piston speed to the rate of bleed off is minimal. The shock is maybe the same, in the time the shock takes the hits it takes in a pass the tunability of the double adjustable is effective because the percentage of loss isnt enough to spoil its effectiveness. The shocks I bought for the front of my car (AFCO) double adj. made it a different car all together.