For people who have both a PRG and Platinum, can you only carry and use your Platinum card but accrue points at the PRG rates? It makes sense for me to carry both. It would be nice to only have to carry one of the cards in my wallet lol. I saw this on Amex's website.

"The value of Membership Rewards points varies according to how you choose to use them. If you have more than one Card account linked to your Membership Rewards program account, the value of the points you receive will be determined using the Card that provides the highest point value. To learn more, go to www.membershiprewards.com/pointsinfo."

I've gone to the link listed, but can't get a clear answer. Thanks!