Considering buying and question on the PCIe slot

[zener]

So I imagine the greatest interest in this SBC is the PCIe slot, so what have people used that slot for yet?
Are there any good drivers out there in the ARM world yet that people who aren't pro Linux programmers and kernel compilers can use?

I'm was hoping to use mine with my new PCIe based XTRX SDR (Software Defined Radio). But at first attempt the driver did not compile on arm64. So it seems like some debugging is required. But at least it's detected:

Code:

root@rockpro64:~# lspci
00:00.0 PCI bridge: Rockchip Inc. RK3399 PCI Express Root Port Device 0100
01:00.0 Memory controller: Xilinx Corporation Device 7012