When mounted horizontally and base upward (as in the console location) the original base has become the cover and enlarges the device's footprint by a half inch or so as it's opened for use, so it can't be located flush against the endwall of the console. [Not sure I've said that the best way; if unclear, test fit it and you'll quickly see.] Will still work using forward-most existing screw to place cupholder as far forward as possible while allowing room for its 'cover' to move forward (~12-15mm) as it swings up into operating position. [Rear area of console tray is occupied in my car, so that option not explored.] Regrettably, it all necessitates removal or puncture of the liner.
Seems to be good quality, likely effective. Ingenious to flip and mount it horizontally with base uppermost. After some pondering it begins to look like additional incentive to install a console structure on top of our trays, where it could be mounted on a vertical surface as originally designed. I have a very effective gimballed holder mounted that way, am rethinking it; the Fischer is far more compact and presents a better appearance.