Hello, I'd like to get a flippy screen / WLF substitute, to shoot an odd portrait once in a while. I doubt I'll ever do lengthy video recordings, so tablets' lack of interchangeable batteries shouldn't become a problem. Do I sacrifice responsiveness by going for a tablet? How much laggier is transmitting live view via WLAN and the EOS app compared to a wired transmission to a dedicated field monitor? Or why else would you recommend getting a monitor? Mounting a tablet to my lens' tripod collar seems within my handyman skills range. TY very much in advance.