The Van't Kruijs opening is some what common and occurs frequently enough that only serious chess players should be familiar and study it. From the data, you can expect that White will only have a 46.58% chance of winning, while Black should have a high 53.42% chance of winning. Because of the fact that this opening occurs somewhat commonly and that White has such a low expected chance of winning, it is definitely well worth it to study this variation. Since if it does occur, (and you are Black), you should have a significant edge.