Sorry to reboot this conversation thread again, but I can comment on a couple of things.
1: I can sniff both Osram Lightly Home and Pro with Wireshark, but I could not the Hue starter kit where the bulbs are bonded to the hub.
2: Ikea have just released Tradfri wireless smart lighting, and I have not yet looked into sniffing that, BUT the bulbs can pair with the Osram systems; Home is limited to on/off, but Pro can adjust intensity and white tone.
3: Osram and Hue bulbs can be bound to Ikea Tradfri. Osram RBGW bulbs are limited to dimming and white tone as colour is not supported in Tradfri yet, but I can only say that Philips support on/off as the bulbs are the starter white ones.
4: Of note for #3 above, Ikea do a remote control which forces Zigbee bulbs into a reset mode and allows the Trader remote to grab control. This breaks the lock of bound Philips bulbs to the Hue hub! I can now bind them to my Tradfri, but cannot get them to bind to Osram Lightly home or pro gateways. But, it does allow me to grab control of both Sram, Philips, and Hue bulbs.
Just hope that Ikea come through with their claim to support Hue in both directions, and hopefully Lightify
Andy