Scott> 0 > boot scsi-int/sd@0:0,OFWBOOT.XCF
Scott> boot-file           OFWBOOT.XCF 

Based on the explanation in INSTALL.html,
you do not need set boot-file if you use GENERIC kernel (netbsd).

Issue 
  set-default boot-file
to clear that setting.

If you really want to set something on boot-file, use 'netbsd'.

Scott> By the way, setting "auto-boot? true" so that it uses "boot-device
Scott> scsi-int/sd@0:0" and "boot-file OFWBOOT.XCF" gives me "unrecognized Client
Scott> Program formatstate not valid"

This is really timing issue. By setting some delay in nvramrc, it may
be resolved. But I haven't really heard of the success story.

---
Makoto Fujiwara
http://www.ki.nu/software/NetBSD/iBook2/
http://www.ki.nu/software/namazu/tutorial/