I brought a PowerBook 180 to work along with the radius PowerView and all the appropriate cables and was able to get three monitors to work together! The right monitor is driven by the PowerBooks onboard video display, at 832x624 resolution. The left monitor is driven by the SCSI PowerView at 800x600, both with a depth of 256 colors. I might bring my SCSI to ethernet adapter to see if I can get the internet on it.

Unfortunately the setup is kinda fickle, I can't seem to get the PowerBook to boot with both external displays, I have to boot with the SCSI display first, sleep the 180, then plug in the other display.