So what are the chances that you'll be able to get an open standard RISC?

Unlike software, you can't just download the code, you have to pay for a fab

Right now there are open implementations that have been taped out into chips and various open FPGA implementations, but nothing for sale. lowRISC seems like the most promising open RISC-V implementation for that.

http://riscv.org/ http://lowrisc.org/

Apparently they estimate there will be a Raspberry Pi equivalent for RISC-V in about a year (whole talk worth watching):

https://youtu.be/QTYiH1Y5UV0?t=39m20s