Artemis might use a swipe gesture to visually hint at the relation between upvoting and boosting, as shown in the main animation. Here’s a static app mockup with both swipe levels displayed. I’d also imagine that there should be a setting that auto-upvotes posts when boosting.
I love that. even just swiping to vote is awesome, even better with boosting in there. I think swiping the other way should be downvotes then