I have the quenox adapter together with the Eye-Fi Pro X2 Secure Digital High Capacity (SDHC) 8GB Memory Card with Wi-Fi in my Canon EOS 7D Digital SLR Camera (18 Megapixel, 7.6 cm (3 inch) LCD display, Live View, Full HD Movie) housing and could not detect any incompatibilities.
Also no problem with the video function or fast series.