BTT 5.566 alpha adds a new variable that can be used in trigger conditions "last_trackpad_force".
E.g. if you want to have two gestures, a standard click swipe and a force click swipe you'd set up two click swipes. For one you add a condition last_trackpad_force > 500 (for example) and for the other you'd add a condition last_trackpad_force < 500
(the force value is in grams)