I love it! I'm glad there's a solution to have a one-button symmetrical weight paints for 1 or all. And a great solution to check any rogue paints. Though there might be still some bugs to squash like intentional symmetrize weight paint with/without normalizing and sometimes a bit of an artifact when used. But still beats without having something reliable.
Great addon, suggestions, a button to rehide DEF bones, xray with bones in weight paint breaks default vertex xray, which is unfortunatley a crucial element in my workflow.
Very neat! Added new bones, didn't have to screw with vertex groups. Would be AWESOME if you added the armatures bone collections to the EasyWeight tab as well. What's there is awesome for selecting bones.