Yes -- you have to have the money to roll with the risk, though. My friend was buying this house as a single person with small cash reserves, which the advisor

Yes -- you have to have the money to roll with the risk, though. My friend was buying this house as a single person with small cash reserves, which the advisor knew; for her it would have been very risky given her relatively low income. If you have two incomes and some larger savings, the interest rate game might be one you can responsibly play.