I've used 1Password generated passwords for years. You're right, it is awesome, but only until you have to relay one of those generated strings to a support person over the phone:
"...left curly brace. No, it's like the parenthesis, but squiggly. Are you using a regular keyboard? Hold shift and type the left square bracket. The square one. It's to the right of the P..."
"...left curly brace. No, it's like the parenthesis, but squiggly. Are you using a regular keyboard? Hold shift and type the left square bracket. The square one. It's to the right of the P..."
Nightmare.