JCB Credit Cards Accepted in Europe?

Here's a question for you, our readers:
Have you found the JCB credit card (chip-and-pin) widely accepted in Europe, especially at automated facilities such as gas stations?

There have been some online discussions at Upgrade and Frommers that Europe is going all chip-and-pin, but currently to our knowledge no U.S. Visa or MasterCard offers chip-and-pin cards. Visa, MasterCard, and American Express insist that swipe-and-sign must be available from any merchant that accepts their cards, yet that could be an issue with automated 24-hour gas pumps, self-vending train ticket machines, grumpy waiters, etc.

The JCB credit card is available to residents of certain U.S. states, and could be a useful international travel tool. Let us know your experience obtaining or using a JCB card.