Sure, you can swap into some paradox lines for high-movement if you haven't been banking swifts and triples that does dogshit damage compared to the core rotation if you want to move around for extended periods or you for some reason don't like slidecasting. I'm lying, of course, because he's using swifts and triples to hit the B3s in that rotation. Given that you're generally primed to use swifts / triples for damage over mobility already, even just the choice to bank them for mobility segments you know about is a technical loss. Using them for B3, the move that nonstandard was designed to completely trim from the rotation, is even worse.
Meanwhile, PCT can just breeze through their normal rotation with abundant mobility without having to make any particular tradeoffs. While doing more damage. And providing more RDPS. And not having buttons they literally don't press under any circumstances.