Hmm i don't get it. You say you're "block capped" thus you're only capable of avoiding regular melee hits during shield block uptime. Or am i mistaken here? Just a quick glance at the top 5 ranked warriors:
All of them eating some regular hits. For paladin.. a friend of mine is passively "unhittable" but only with a certain trinket/elixir setup. But he prefers using valiona trinket on this fight for avoiding additional Decimating Strikes over an unhittable setup and looking around a lot of tanks think in a similar way (well to be fair especially on 10m).