No and yes... Let me explain.
IRIS has an extra layer of software that prevents their ZigBee sensors to connect to anything but their gateway, so they're no go.
On the other hand, the Z-Wave sensors will work, as they're not allowed to put any extra software on them due to the fact that they need to pass the Z-Wave certification.
We don't have an API as such, we have an SDK, but it's C++ based. We're considering an API, but it's some 6-12 months out at best, as we're still a fairly small company with limited resources.
Currently there's no support for cameras, but it's something that has been discussed at length and it's something we want to add.