Mantra of Recovery + Centaur Runes vs. Focus?
If you invest enough into Chaos, or slot Signet of Midnight, you can get near perma-swiftness from Centaur runes and Mirror. IMO, MoR is really only worth it if you’re already speccing for mantras.
The downside to the Centaur runes is that the +15% bleed duration doesn’t apply to the bleeds from Sharper Images, which is really our main source of bleeding. This part of the set bonus kind of goes to waste.
In the worst case scenario, you can just switch to the focus when out of combat and switch back to your normal off-hand after casting the curtain.
The only build exchangeable between PvE WvW and dungeons is power/crit GS/Sword+Focus
If you’re refusing to use the focus don’t worry about your build. Just do whatever you want.