I own several FS7 and have never had an overheating problem even when running them for long periods of time with all sorts of accessories and externals. Also, the heat required to screw with an XQD card is something I’m not even sure the FS7 would be capable of. My Atomos external monitor gets hotter than the Sony, and even that is not too hot. I know for a fact (per manufacturer) that SD cards from Sony A7 series photography cameras cannot be recovered when formatted, so I assume its similar for the pro video line. For important shoots, one can record on camera and with an Atomos, a redundant system which eliminates the horrors if someone accidentally formats Sony slot A instead of B in shoots that run long.