According to the force diagram
here the keys
should feel quite close to buckling spring switches, such as those in a IBM Model M.
I have never tried one myself. Most people who have them do not seem to like them very much, though.
There is more to feel than just the force-displacement. It is reported to be bad on off-centre key presses, especially on long keys.
Some composite switches (and I would call this a composite switch) have the tactile point at different depths depending on how fast you press the key.