I see what you mean and I think it is a very clever solution.
I like to use Slitaz on an eeepc701 and to use it completely in RAM. It is preferential that no reference be made to the 'hard-drive' and nothing to retained on the 'machine' itself.
In earlier versions I would create an ISO, after setting it up the way I wanted it, then boot it when needed.
I use cloudy things so I don't retain anything on board but I would like avoid setting everything up each time, for example, wireless and even choice of wallpaper.
.....but, being a bit non-specific...........can't burn iSO CD or to a USBdrive.....or even install to a SSD.