I have seen a stock xp track get ripped open from a small stump. I went in through the ported hole. If your not worried about the little bit of weight i would not do it. Remember that hole could cause you a $1000 track.
This is exactly why I have refrained from "track porting". For what you gain (if anything at all), it isn't worth the chance of stabbing a stump or something else and completely destroying a track.