I like inertia reel should harnesses but I took mine out of the EX. I replaced it with a fixed shoulder harness and in the rear never installed the reel. The back has a fixed harness too that is on a quick release snap.
The reason I removed it was because I like to cinch myself in tight when it gets rough. I don't like getting tossed around and the inertia system won't normally lock down when it gets rolly polly. I don't mind riding it out if I don't also have to brace myself with my knees and free hand.
But it I like the inertia system 95% of the time. And I'd prefer to keep it in the EX. Does anyone know of a way to lock the reel down manually as needed?