I don’t believe the original IKEA Devices were certified for either profile: I think that technically they’re “manufacturer proprietary.” No guaranteed interoperability. The inexpensive orvibo zigbee devices are the same way. They mostly work but there are some idiosyncrasies, including the fact that the Orvibo devices will work with the SmartThings 2 hub but not the first generation hub.
It would be nice if Ikea eventually got them fully certified, but I wouldn’t count on it.
One of the people on the hue developers board has done some deep dive work on just what commands are being sent and has the following information:
The bad news: both the light and the remote seem to use the usual ZLL clusters, but on a ZHA endpoint instead of a ZLL endpoint. I’m no ZigBee expert, but it would seem like the Trådfri is not ZLL compliant.
Updated: In April Ikea did get one version of one light ZLL certified, but it only appears to apply to that specific firmware/hardware model. They didn’t go back and upgrade other existing devices. So it may also be that people have different experiences because they have devices with different firmware and technical specifications. That’s likely to be a problem for a while because of the retail distribution. There won’t be any way to tell in the store which devices are from the older stock.
For those interested in more technical details on why not all zigbee devices work together, see the Community FAQ: