I had an X2 (and before that, a couple of Minimed pumps), then I switched to the Omnipod. The Omnipod is a disposable pump you swap out every 3 days, so less of an issue.

However every time I've gotten a new pump, the diabetes educators always instruct you to have a backup plan, whether that's your insulin vial you may have already brought (even non-disposable pumps require you to swap out the reservoir every 3 days, so you should have insulin with you) along with old-school injection needles, or an insulin pen with needle tips.