Tether Tools' Case Air

I found this device a couple of weeks ago thinking it would be a great solution to the delay that sometimes occurs in accessing and showing images at events. In the limited tests I've given it, it works well, and certainly does that.

However, the images will appear only on the computer screen - not on the camera's LCD. I find that a little distressing because I trust my eye for focus, lighting and composition more than anyone else's - as I'm sure most photographers do. The issue is that nothing will show on the LCD if a USB cord is plugged in. If I decide to keep and use it, that burden is now placed on my assistant.

My long-winded preface is to ask if anyone else uses this, and whether there's a way to work around it. Nikon itself says no - not just with the model I have (D700), but ALL Nikon bodies.