The R-Pi's screen has one advantage no other screens have - it connects to the R-Pi's LCD Screen Port (Tiny White or Black Slot near the GPIO Port towards the end of the board).
 
I believe that the ribbon is already reinforced but to strengthen it further you can use packaging tape to sandwich the ribbon into, leaving off a 1/2 inch bare on each side to connect to the screen and board, and some overhang on the side so that the tape breaks before the ribbon does.
 
The touch screen has a mounting bracket on the back to put a bare R-Pi on to it. I do not know if you can use a cased-in R-Pi onto that bracket. You might have to make an invention with glue or velcro to attach the cased-in R-Pi to it. See Engadget's link as to how it is hooked up:
http://www.engadget.com/2015/09/08/raspberry-pi-official-touchscreen-display/
 
They are supposed to go for around $65, but I suspect by the time that screen comes to the USA, it will be closer to the $100 area.
 
Since it connects to the R-Pi directly, the R-Pi powers it. Thus i you are using a battery to run it, expect the battery life to be cut in half. My experiments shows that a 2600mah cellphone battery pack charger will run a R-Pi for 4 to 6 hours, so with the LCD, it would be 2 to 3 hours, which is respectable as far as laptop batteries go for. If you run more than one battery pack, run them in parallel, not in series - and it will increase battery life times the number of batteries you use.