Luke, if you keep using the Porter and find the high roll top annoying, I bet HMG could shorten that for you. As I understand it, the high extension collar is the only difference in volume between the two packs.
I should also mention that the 50D cuben-hybrid stuff softens substantially over time. I don't know about the 150D, but it may become less of an issue after some use. Personally, I was surprised at how soft and pliable my older Porter's fabric has become when comparing it to a new one.


