My training was pretty intense as far as days off were concerned. In 6 weeks of training we only got 10 days off but I managed to make it home at least two of those weekends during the systems ground stuff. The best studying I did was sitting on the plane going to and from training. Plus, being home and hanging out with people you haven't seen every waking minute of your life for the last 6 weeks helps a lot. If the loads are light and the schedule allows it...I say do it.