Password with real words (like Diceware) really safe?

Especially while driving.

Yikes! As a motorcyclist, I do hope that you never actually do that. Please keep your eyes on the road.

(I thought there was an ability in 1Password to have normal entries and high-security entires? DId that go away?)

Yes, one of our goals with 1Password 4 was to make strong security the default. The old PIN code had the downside of being used to encrypt some items and with only 10,000 possibilities, this just wasn't good enough for us to continue with. We did away with that approach in the first iPad version as well. The PIN code was originally conceived as a convenience feature for frequently accessed items in the time before iPhone OS supported fast app switching and background tasks. It was a compromise we were never happy with, but it provided the best balance of security and user experience at the time. We do still have the unlock code available in settings, but it is only used to control access to the 1Password application, never for encryption of any of your data. This means that you need to authenticate with your master password at least once per session in order to be able to use the QUC.

From the User Guide:

You can configure 1Password to never prompt the password/code, but this only works after you:

1. Initially unlock 1Password app already,
2. Set both Request After and Request Code After to Never, and
3. Also keep re-opening 1Password once in a while.

Why the last one? When you stop using 1Password, the iOS app will keep track of how long it’s been in the background in order to ensure there’s enough memory for your current and most recently used apps. 1Password can remain unlocked in memory only until iOS is forced to fully close the app in the background to reclaim its memory block, so that your current apps can use it.

If the termination has occurred, you’ll have to enter the master password to unlock it.

Note that the more memory you have in your iOS devices, the longer 1Password can remain unlocked. Keep this in mind when switching to older iOS devices that might see 1Password locked more often.

I hope that clarifies the situation and our decision a bit. If you have other thoughts or ideas, please let us know.

And here's another thing [rant] why can't the 1Browser save SSL certificates? I have a self-signed certificate to access my web server over SSL and every time I have to confirm that the certificate is OK [/rant]

I'll pass your request along. Thanks for mentioning this.

Is voice recognition security feasible? That, at least, would be hands free. (Voice recognition could be either recognizing the letters/numbers/words I'm speaking and/or recognizing my voice as my own.)

Even just recognizing a voice can be tricky. I'm sure you've used Siri. ;) Accurately recognizing and securely verifying a specific voice is not really a suitable option at this time. But who knows what the future holds?

As for the main point of your post, by all means, please use a Master Password that you are comfortable with. If you prefer not to use a Diceware password, that can be perfectly acceptable. Diceware is just the method we recommend. :)