My purpose with VAM is to make and record videos for myself. With WindowCamera (WC) I can for example adopt the PoV of someone who has to come through a door and go to a desk. I can also move in a crowded train towards the 'victim' in the distance. WC moves very smoothly compared to trying to do this with the mouse. I set up WC in Timeline and then when I'm about to record, I set up the Screen Grab, start the Timeline animation, hide its menu (using 'U'), start Screen Grab recording and finally press 'M' to get the WC HUD on screen. It works well for me. In these instances I need to hide WC's attached screen as it shows up in the HUD and hence the 'M' screen.