Will it work? Let’s see…
Grabbed the amd64 memstick image.
Post-download Terminal commands:
gunzip amd64memstick-5.1.fs.gz
diskutil unmountDisk /dev/disk1
dd if=amd64memstick-5.1.fs of=/dev/rdisk1 bs=1024k
Rebooted with alt key down and fingers crossed.
10 minutes later…
Nope, no luck this time. Maybe the next release will do something to fix that.