So. I did the test, and it seems to work without problems. I've selected 500 random books from my collection and mass-tagged them with the appropriate data using mobiperl, and a small one-shot script, and the results are great
.
I admit I didn't check all 500 of them. I've picked 30 random books, and they are all syncing just fine, so I
assume all of them are working fine. As I mentioned before, the only problem is that the android app is downloading some random images as cover art, but I can live with that.