its coming along amazing you guys, i really wish i knew what to do like you guys, but my knowledge isnt as much as that yet =(
all i could do for you guys is just be a test dummy and help out any way i could. but i really do believe you guys will get our N1s a fully working ICS port =)
edit: just tried to install the alpha2 and it goes straight into fastboot for me.
the steps i took to install was booting into recovery, did a backup, used a format.zip file, and then the flashable zip file in the OP, then rebooted.
i even tried not using the format.zip file and just used the wipe built in the recovery and same results occured. phone info on my sig