Work it out with your other healer on who gets first dibs on what if it drops. Problem solved. Only time anyone should be rolling against another player is when they both are at a crossroads needing the same exact item. I haven't seen that happen yet and it didn't even happen in my group that runs 2 bards. Example: boots dropped 2 weeks ago, I passed and let other bard have them. Now I get them next time they drop, gg everyone goes home happy.