I stumbled across this video of Guro Ray Floro wielding a machete with 2 hands, which is almost always held with one hand.
I first trained in the FMA in Kabaroan under GM Ramiro Estalilla, a method that uses a long stick of 36 inches, wielded principally one-handed. After studying Tapado under GM Mike Vasquez, I realized that the long stick is best wielded two-handed. Two hands offer greater strength and control/precision.
The next step for me was to think, "Wait, wouldn’t all weapons benefit from a 2-handed grip?" I’ve come to the conclusion that whenever possible, a 2-handed grip creates more power, speed, control, and provides for greater weapon retention.