So, I made the "Rolling mortise jig" and the "Router lift"
And yesterday I tested it for the first time.
I started the first mortise by cranking the "Lift" up 3~4 turns and push-pull the sled and another 3~4 turns and another push-pull.
But then, I realized that actually there is no "Fence side" and I can push or pull the sled.
I ended up working simultaneously with both hands...the left hand pushing and pulling the sled and the right hand, rotating the Lift continuously...every mortise took me some 15~20 seconds (48 mm long and 20 mm deep).
I cannot tell how long took me all the 8 mortises because taking the pics (136) in-between took me much more time than all the mortising.
The jig is not limited only to "edge mortising", if you mark the mortise location, remove the "sled stops", and align the marking with the "locator", you can make it anywhere along the board.