1. You'll be able to see all your camera's through the NVR interface (i.e. at the NVR's single 192.168.1.xxx IP address). You'll also be able to log into each camera on the LAN side individually at their assigned IP addresses as well. Some NVRs let you log into the camera's web interface connected to their integrated POE switch via an internal bridging technique (called Virtual Host on Hikvision NVRs), check with Swann.
2. Do the POE switches have any non-POE ports? My POE switches are 4 POE ports + 4 non-POE ports (8 ports total per switch) and I daisy chain the POE switches...4 POE cams on each switch, non-POE port one switch to the other non-POE port on the other switch and one non-POE switch port to the NVR's LAN port and another non-POE switch port to your LAN.
Ok, update time...
Since I have only 3 "additional" cameras at this time (8 in the NVR's POE ports, plus 3 others), I'm using just one POE switch now. FWIW, it's this one:
TP-LINK TL-SF1008P 10/100Mbps 8-Port PoE Switch, 4 POE ports, IEEE 802.3af, 53W
So, it has 4 non-POE ports. I used one of those to connect this switch to the NVR's single LAN port. Whether I have 1 or all 3 cameras connected to the switch, the HDMI out to our TV shows just the 8 cameras on the NVR's POE ports... I then went into Swann's administration screen to see if the software might be seeing the cameras, and I saw no such indication - just the 8 cameras on the NVR itself... So, not what we expected or hoped.
The good news is that I connected my router's LAN cable (previously on the NVR's LAN port) to the POE switch, one of the other non-POE ports, and I can see cameras on our computers and devices...
Thanks for the daisy-chain idea. Makes sense.
Given that I can't see these cameras on the NVR's LAN port, that's the problem now though. You sound rather confident that I should, I'm not sure what to make of this... Any ideas?