I think you will only suffer minimal loss that is not greater to the 60% profit. I usually complete x6 wager with minimal loss even on my normal gambling with blackjack.
I am more curious to know when one has to wager and what should be the amount. Let's say I have staked 0.01 BTC for a year. After a year, I should have 0.016 BTC once it matures. Do I have to wager six times of that 0.016 BTC, or do I have to wager 0.01 BTC six times? If I have to wager, I assume I must complete it once it matures, right? I mean when I will get it unstaked.
I don't remember seeing something like this before. Probably betfury is the first casino with such staking packages. But hey folks, this is gambling and it's not recommended to do with the money you cannot afford to lose.