Will do very well, I´m using three of that kind without any problems.
Well, not to 100%. Especially older Macs (maybe not the PowerBooks) tend to drop that functionality in accordance to their type of ethernet controller, SCSI controller or whatever. For example: my Plus with an Asante EN/SC does not show the MAC adress by this procedure while the SE with the same OS, MacTCP and the same adapter shows the MAC adress.
Any Mac fitted with the right software can act as an AppleTalk seed router. But have this in mind: a Performa 475 only provides 10Mbit which might slow down Macs that utilize the 100Mbit transfer rates. While this isn´t tragic it can slow down local network connections notably.
J