Yes, in the hypothetical example I gave at the end of this post, the worst case scenario is the SBD price falls from $1.20 to $1.00 or less. Even if the SBD price falls to $0.70, you'll still be able to turn your 10 BTC into 16.7 BTC, assuming everything else remains the same.
However, if SBD only falls to $1.10, you'd end up with more than 16.7 BTC.
Yes, in the hypothetical example I gave at the end of this post, the worst case scenario is the SBD price falls from $1.20 to $1.00 or less. Even if the SBD price falls to $0.70, you'll still be able to turn your 10 BTC into 16.7 BTC, assuming everything else remains the same.
However, if SBD only falls to $1.10, you'd end up with more than 16.7 BTC.