You know, I had the same dilemna a while back. While RISC-V is definitely the future, its not here yet. For high performance applications, using experimental SoC’s from sifive or Alibaba might not be a good idea. However MCU is where all the RISC-V game is right now and I think if your application is IOT or other low power/low performance gadget, then surely check out the RISC-V microcontrollers offered by NXP for example.