I too have a Shift Visa. Unlike Bitpay (et.al.), you're not actually topping off a prepay card with fiat, and they charge for that top off. There are no fees on the Shift.
I recently re-linked my Shift card from BTC to LTC. Nice feature to be able to link it to BTC, ETH, LTC, or USD wallet. If Coinbase adds others cryptos, it will be the debit card to have. I just wish Shift would have branded the card as a BTC or crypto-card.