Does anybody have any experience? Pros/cons..

Of course it would be centralizing my coins and making it were I would not control the keys to said coins, but that is why I would only put in what I'm willing to spend at that moment really, or willing to lose.

I am already registered with coinbase and have been for a couple years so I was looking into their Shift card? Since they already have my info and everything..

Thoughts, opinions, anything ?