Here's a screenshot from real hardware (actually the SE/30 PDS variant of the board, but it looks like it works quite similarly).

The SE/30 motherboard I bought arrived today and I successfully dumped the video declaration ROM from it (it's separate from the main system ROM SIMM and contains mostly credits for the SE/30 hardware since the driver is very tiny). The emulated SE/30 detects the display and puts up the familiar Mac "rug pattern" but doesn't go farther yet.