Wouldn't just using the Coinbase VISA card accomplish the same thing? Maybe fees higher, and you'd need a physical card, but otherwise isn't it essentially the same?
The shift card service was cancelled a month or two ago.
They are most-likely working to form a new scheme for having the service.
I will admit; the market-rate zero-fee purchases with the original shift card were superb.
I literally lived off mining profits for over a year using it.
I use TenX VISA Debit card - works like a charm....