FWIW, i previously had a WRAP board (without RTC battery backup) and i dearly missed the RTC backup. After a power cycle, for whatever reason (usually the kids' way of resetting), sometimes the network timesync did not work (don't know why). In these cases, i had to change the timeserver pool settings for it to reconnect. Without the correct time, the schedules where of and some members of the family did not have internet because of this. I now have the ALIX 2D13 and this problem is gone.
BTW, i didn't change the board for this reason, but because my good old WRAP died.