We used to have huge holy wars.
We have since changed some of our communication techniques (more due to college classes on the topic than poly) and we haven't had a "knock down drag out fight" in a couple years.
But we still have major disagreements and they require time outs and days of discussion (followed by time outs and consideration of points made) and sometimes written parts (to avoid verbal blow outs).
GG and I have been in the midst of a major disagreement for nye on a year now. Making slow progress through it-but it's still there. We just don't throw things and yell and scream about it.
"Love As Thou Wilt"