The warlock jump ability is momentum based. To get the most out of your jump, tap the jump button twice rapidly. You can press it a third time or ads to cancel your glide. The rest just takes some getting used to, you can't cover grind as fast as the hunters double jump, and you are a bit more vulnerable in the air. However, you can set up a sort of ambush for somebody by being in the air when they come around a corner and catching them by surprise. Hope that answered your question. ps- welcome to the warlocks ;)