Well force is how hard you have to press the switch for it to register, it's designed to be pressed so assuming you find a suitable 'keycap' that won't be a problem. It could be too easy to press or too hard, but that's a personal opinion.
12V at 50mA is the maximum before the contacts get hot and likely melt the casing, 1V at 1uA is the minimum needed to overcome the resistance to have the signal pass through. Keyboards operate at 5V with a constant voltage supply (only provides as many Amps as required to maintain the voltage) so I think you'd be running at the 5V at 5mA the lifespan was measured at - knowing marketing people that's probably the values where it lasted the longest.
So electrically it's perfect, the only thing that doesn't look ideal is that it's only 1cm wide and 3mm tall - if you put a big 'keycap' on it to make it as tall as other caps I think it will be too light, but as above you may like it