A Jet Boots Bouncer can go for two main routes: Offensive tech usage enabled or no techs, pure Striking. Offensive techs are used to set the Jet Boots element and build Gear, which are discharged with Vinto, so an offensive tech enabled Jet Boots Bouncer has more flexibility and DPS with Vinto setups against bosses. On the other hand, a pure Striking Bouncer can use Dual Blades.
Once upon a time, Bouncer had little to no incentive to be a main class. As of the Path to the Future update, there are four titles that give a total 10% boost to Bouncer (Bo) weapons as a main class Bouncer. In addition, a main class Bouncer can equip 13★ weapons. Bouncer main is now attractive and likely more future-proof.
Selphea is just some random gamer who can never decide what to play and runs weird builds. But hey at least they work!