Personally, I would rather do something along the lines of just selling the Bitcoin and then paying off the Credit / Debit card with the money made from selling the bitcoins which you're probably going to be earning on a set schedule. I feel as if the current bitcoin cards are just going to get you into more fees and the volatility of the BITCOIN currency itself isn't going to help you when you want to make these transactions happen. I'd rather have the flexibility of a normal card and the reliability of a normal card which is going to be fine and even help you in the long run with helping you build up a credit score.
If I may ask, what is the advantage of using credit card bitcoins?Can it benefit us? Or just make us incur losses,With unstable bitcoin prices, seems to be making us a incur losses ,!
To be frank the only advantage of using credit card bitcoins is that it would be easier to spend because it is a credit card and many accepts it. It can benefit us because sometimes it is easier to convert bitcoin to fiat this way, but it discourages bitcoin adoption. The only losses you will incur with bitcoin credit card the normal loss you will have when market moves, and also some fees, nothing more.
It may discourage adoption of Bitcoin, but it does give people an incentive to use their bitcoin and allows them to use it. This changes it from their bitcoins just sitting around and not doing anything, so I guess it does help depending on the way you look at it.