I know TIPS are very unpopular here, on the basis that you can't rely on a government product that supposedly protects you from a government-created problem. I agree when we're talking about high inflation--a condition in which TIPS have never been tested. But TIPS have been tested pretty thoroughly under conditions of low to moderate inflation, and it seems like they've performed as expected so far.
This is just a thought, and I haven't implemented it (nor do I think I will), but has anyone considered dividing their gold holding between gold and TIPS on the theory that both together will provide a better hedge against all types of inflation than just gold, which protects you best during high inflation?
Backtesting reveals that this adjustment would have slightly reduced returns, but halved the volatility. Here's a portfolio that splits the gold allocation between gold and TIPS:

Compared to the standard PP:

Thoughts?