Red AXS 50/37 Crankset with Rival FD

Looking to reduce crank length so it is kind of a perfect time to think about upgrading from a 48t at the front to a 50t (which SRAM only sells for Red). Any reason the 50t (50/37) wouldn’t fit with the Rival AXS eTap front derailleur? People do it with Force all the time and the rest of the 2x’s are compatible with Rival, I just don’t want to have to splurge on a derailleur in addition to the new crankset.