BPI-F3:Pci gpu via mini-pcie riser card?

did anyone maybe already did some experiments with using a mini pcie riser card to connect an old radeon pci graphics card to the mini pcie slot of the f3 as it is described here for the visionfive2 here: StarFive VisionFive 2 Ubuntu 22.04 ATI Radeon R9 290 (that is using a m2 riser card, but there seem to exist similar cards for mini-pcie as well)?

best wishes - hexdump