Actually it looks like zwave door lock support for Schlade and Kwickset locks will be released in OH 1.8. You can experiment with it now if you get the nightly build for the 1.8 zwave binding. See this lengthy thread for the discussion and current status.
Personally I got a Kwickset zwave deadbolt but probably won’t openHAB enable it. It has a keycode to enter on the outside and I can set it to automatically relock after 30 seconds so if the door is closed (I have sensors already hooked up to OH for that) I know its locked and if I need to unlock it I have a keycode which is way more convenient than whipping out my phone to unlock it that way. If I do enable it, it will be to get the battery status or as a “just because I can” project.
But the point is that door lock support isn’t as far off as you might think, but even if it is there are other ways around your problem.