I didn't used bitcoin debitcard. I don't no about it! Using a debit card is more better l think. It is only my pesonal opinion.
Yes of course. Currently using the retro fiat debit cards is profitable.
Because currently the bitcoin debitcards are overpriced and after some time its prices would probably come down.
So in my opinion also it is not good to use those cards right now, i'll wait for sometime before using those.