Here are all interactions on: Solar Hunters: [spoiler]https://youtu.be/TDfoEDN2ZBU[/spoiler] Arc Hunters: [spoiler]https://youtu.be/ffWl6dzEmXM[/spoiler] Void Hunters: [spoiler]https://youtu.be/zyzneGYkRk0[/spoiler] Arc and Void basically just have the same interaction of gambler's dodge not refreshing the melee ability, while Solar showcases additional interactions of how passive buffs and abilities that help to refresh the melee charge in middle and bottom tree don't work. While I only took the time to record Hunters, they showcase (especially on the solar video) that those buffs do not work while a sword is out and those interactions extend to the following: Warlock: Solar: - Top tree not recharging melee when getting kills mid-air with a sword out. - Mid tree not recharging melee while under the effect of benevolent dawn with a sword out. Arc: - Mid tree not recharging melee while receiving an ionic trace with a sword out. - Crown of Tempest's conduction tines exotic buff not recharging melee abilities with a sword out. Void: - Mid tree not recharging melee from dark matter with a sword out (using grenades with a sword). - Nezarec's Sin abyssal extractors exotic buff not recharging melee abilities with a sword out. Titan: Solar: - (of course) Mid tree melee not recharging when picking up the hammer with a sword out. - Bottom tree melee not recharging when under the effect of sun warrior with a sword out. - Hallowfire Heart's sunfire furnace exotic buff not recharging melee abilities with a sword out. Void: - Mid tree not recharging when resupply is triggered with a sword out. I'm sure there are a few I missed and forgot to give a quick test, but it should be clear that the general idea is that anything that provides additional melee energy doesn't work while a sword is held in the player's hands, with the only exception to this (which I was able to find) being, that the brawler modifier recharges your melee faster regardless of your sword being out or not.