Thoughtful comments as always on BPL; sorry I can't follow them all!
Yes, the 2nd production run arrived and went on sale yesterday. "Like" Ultimate Direction on Facebook, or subscribe to our email list (from the website) to stay informed.
Currently, iRunFar, ZombieRunner, and RunningWarehouse are the online sources (besides our website).
They have been selling out; by late March the 4th production will arrive, and we'll be caught up.
The two construction issues were addressed for this production; anyone who had a problem with the first should contact "email@example.com" and request an RA; we are repairing them here in Longmont and flipping them back 2 days later.
Sizing/Capacity - the answer always starts with, "It depends ..." Sorry about that! But it does depend on the individual user ... some people carry a ton of stuff and some people don't. The AK Race Vest was designed from the sole parameter of being able to carry the Required Gear for the UTMB in the lightest possible pack ... it does that! And yet last night, Tony himself told me he would probably use Scott's vest at UTMB because it's easier to get stuff in and out ... so ...?
Women - the Signature Series is definitely uni-sex. Some women object to the bottles up front and most don't - again, their choice, not mine! (And, there will be an "Ultra Vesta" in one year :-)
Bigger - there is a possibility of a "Fastpack" next year - 20L is the sweet spot I think - not a "backpack", but able to carry either a rope and harness, or a little sleeping bag.
Mike - Pine Valley Peak goes w/o rope up the face you see on approach - but the exposure is serious (as you already know) - and one has to be comfortable with the infamous 'vertical sand' type of rock. And Jared and I are on for Zironman this year!