ryanjamurphy
Gonna contradict myself now. I tried and tried to get some nice UX solution working for Yannick's approach above, but every solution adds too much friction compared to splitting tabs in other browsers. Right click -> split tab (or some modifier-click) is seamless, quick, and intuitive. And I have found I depend on splitting tabs way more than I'd previously thought — so much that I have stopped using Orion and switched to Zen (because of Arc's impending doom/transition to Dia).
I miss Orion though! So I will cross my fingers that we'll get an Orion-native split tabs feature soon.