inverted forks are better than reguler. u have less unsprung weight on the tire so they will be perform better. notice how DH mountain bikeing hasent been around all that long but moto cross has. and ever mx dirtbike uses inverted forks...... but this need some work. still not as good as some 40's or 2010 boxxers. not even close
Invented forks on Motocross bikes is a must, Otherwise there is no stopping point. But im not sure if this is neccesary for DH bikes. I think its a bad idea for regular bikes because, it becomes weaker on the impact point which isnt good.
end of the day, there the future, there more direct to the action than a boxxer... there closer to were the action is meanin less flex through the fork, look at the top of the range motorbikes.....