Any every year I remember why I don't leave for HomeSeer - lack of EnOcean support. Now Vera's support isn't that great, but I have worked with Andrei to make it work well enough for Occupancy Sensors. But I am not going to do battery powered Z-Wave for my 19 occupancy sensors - way too much battery changing. With EnOcean solar powered sensors, they just work.
I saw your post on HS today and it seemed like not only is there a plugin but others are using it and have told you it works. I do see you have asked about a specific sensor which no one has to test and the developer has atold you it should work but try it out and if it doesn't send him your log so that he can make sure it does. This seems like it would be right along the same lines that you have worked with Andrei on the plugin here to make it happen. It actually seems really positive to me.
Here is the Dev's last reply from over a year ago that you just replayed back to today:
Have you tried installing the plugin and tested with pir to see what happens? If you enable console (developer mode) for plugins in HS3 and send me copy of the output when the PIR is triggered, then I might be able to quickly add support for PIR. If it's more complicated I might need additional debug or worst case a device for testing.
If there was a cost to try it out I could see the problem, but since
1) Everyone has a computer
2) HS3 is free for 30days
3) EnOcean Plugin is free (and everyone thinks plugins in Hs3 are overpriced)
3) You already have EnOcean sensors and a gateway of some sort to connect it to vera
It would appear you have everything you need to try out what others are already using.
The other real problem I see is that EnOcean seems to not be widely used (in any HomeAutomation controller) period. I'm not a fan of wireless at all myself (my 30 something input sensors all come from my alarm panel) but I wouldn't even know where to purchase EnOcean sensors locally nor have I ever seen them in person. I think this is going to make all EnOcean out of the box support very minimal since probably less then 5% (if that) HomeAutomation users actually have EnOcean Devices. But even with that said it seems like both here and with HS3 you are getting support, it's just here you gave feedback and worked with the Dev. There you haven't yet.