Yes I have one, company supplied, and I loathe it.
Too many places don't accept Amex.
The problem is the discount.
You may not know this, but when you use a credit card, not only do you pay interest on the purchase amount, but the card company DISCOUNTS the purchase to the vendor! If you buy $100 at a store and use a Visa, Visa only pays the store around $96.00, ( old information, discounts may have changed).
The problem with Amex is that while Visa/mastercard may discount 3-4%. Amex discounts 7-8%.
That's why so many small establishments take V/MC, but not Amex.
So when you lay out that Amex, know you're screwing the vendor.