Success! Scanning with wl12xx on my ADP1 works. I’ll post more later but here’s a teaser. That’s a real SSID, however apt.
# ./iwlist wlan0 scan wlan0 Scan completed : Cell 01 - Address: 00:0F:B5:63:30:4E Channel:11 Frequency:2.462 GHz (Channel 11) Quality=14/70 Signal level=-96 dBm Encryption key:on ESSID:"SERENDIPITY" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s Mode:Master Extra:tsf=000001dec907e41c Extra: Last beacon: 160ms ago (Unknown Wireless Token 0x8C05)