This is going to sound like a humblebrag, and I'm sorry if it does, but is it really such a big deal to spirit bond accessories in dungeons if your left side (weapon in particular) is at a high level? When I turn up for dungeons in my SCOB gear, I'm constantly taking aggro and have ended up changing my play style with the expectation that this'll happen. (AOE rotation: fire 3 -> fire 2 -> AM to tank -> continue) Stuff does die quickly, but it gets messy and it's pretty hard on the healer, and I imagine it's annoying for everyone else too - monsters going everywhere screws up melee DPS and makes the dungeon a pain for the tank. I usually finish the dungeon feeling like the antisocial jerk player of the run.
I've been thinking about how to deal with it, but so far all I can think of is to play inefficiently or to use weaker gear, which is the problem that people have with SBing in the first place. (Quelling Strikes is nice, but I can't use it for every trash pull unless the tank is speed running, and I can't expect every tank to be able to or want to do this just because of me.)