Ben, I have the WC system and I find that if I tighten the arm so that the VF NATO rail does not slip the arm is so tight that when I go to reposition the VF up or down it torques the entire cross bar and as a result my camera mic is titled upwards or titled downwards. Do you find the same with the system you are running? When you want to raise or lower the position of the VF, do you loosen the ratcheted wing nut or are you able to have the tension to where you can reposition the VF without having to loosen and retighten the ratcheted wing nut, AND have the VF remain solidly at whatever height you position it?
Are you able to position the VF parallel to the lens without having to loosen anything? That would be nice for storing the camera in its case. As it is now, with the WC system, the VF is always perpendicular to the lens and that makes the VF more likely to suffer damage when in my soft-sided camera bag.
Sorry, in haste:
Yes, the friction is set and forget and it's adjustable enough for constant smooth friction.
Storage - I remove the loupe and the screen folds nicely under the arm, to go in the bag.