Anybody have first hand experience of using both the original Kumo AND the new fastpack model?

I’m no trail runner but with a UL base weight and regular 25-30 mile days on trail, I’m really intrigued by the new model.

My original Kumo has about 3000 miles on it and I’ve loved the pack but it’s getting beat up and I’m considering the upgrade.

Does the fastpack carry any more comfortably than the original? I wear my original with the straps as tight as I can get them so the vest style seems like it might be right up my alley.