Replying to Higher tail than tip height. gimmick?

so a few of the more recent BC skis are having a higher tail height... i think JP vs. Julian's were the first, and I guess the Big Trouble has this now too... is there really a purpose to this? Is there any reason why your tip shouldn't be just as high as your tail, or is this just a gimmick for people who think they will be doing most everything switch. even if you wanted to ride and land mostly switch, why wouldn't you have equal tip and tail height anyways? enlighten me.