The beacon's do not show up in the Estimote 2.0 beta example functions. Only under the firmware upgrade where I can see the BLE MAC address.
If I scan with BTLE Explorer I can see the device. I also can see the device with Nordic BLE sniffer through wireshark and through the Android SDK on a Nexus 5.
The following information was extracted from wireshark.
btle.advdata.manufacturerdata = 4c:00:02:15:b9:40:7f:30:f5:f8:46:6e:af:f9:25:55:6b:57:fe:6d:4a:fa:fd:63:bc