I think the issue with a permament portfolio is that it is going to be dependent on your risk tolerance. If you're happy to ride out any volatility then you can potentially go all in on stocks and your main issue might be the weightings of US vs International. But if you have a very low risk tolerance and know you'd panic if you lost any money at all, then your weighting to stocks is likely very low if not zero, and the bulk of your investments are going to be in CDs or T-bills etc?
'F' You I Won't Do What You Tell Me
Great RATM link
I think the issue with a permament portfolio is that it is going to be dependent on your risk tolerance. If you're happy to ride out any volatility then you can potentially go all in on stocks and your main issue might be the weightings of US vs International. But if you have a very low risk tolerance and know you'd panic if you lost any money at all, then your weighting to stocks is likely very low if not zero, and the bulk of your investments are going to be in CDs or T-bills etc?