While I'm not aching for integration, I'll just also chime in that I'm a MiOS user (using a trusty VeraLite). While perhaps not a top priority, it seems that any integrations like this would add value to both systems, and would be appreciated by their combined user base.
This thread might also be a good place for interested people to note how they might benefit from such integration.
As mentioned above, triggering sprinklers based on a smoke alarm makes sense.
Another scenario might be to pause sprinklers (in a zone?) based on a motion detector being triggered.
(I would suppose the inverse of the above might also be useful if you want to make moving things wet.)
If you wish, please post ideas (or duplicates of existing integration uses) in this thread for others to see.