Matthew L.wrote a review of Arc'teryx Beta AR Pant - Men's on August 20, 2015
Familiarity: I've used it once or twice and have initial impressions
Fit: Runs small
These fell excellent with impeccable craftmanship as you would expect. I bought these as an all around rain/wind/snow/mountaineering pant thinking they would be just as good for rock climbing as they would for ice climbing, but when I received them found a larger flair at the lower cuff than I expected which made them feel 'baggy' at the feet if you're wearing rock shoes.
In fairness these are NOT marketed as ideal for rock climbing, and if as a (poor) college student I could afford to have one pair for lightweight rock/alpine climbing and another for mountaineering I would choose these pants for ice and winter ascents in the mountains.
5 stars for craftmanship and fitting the bill for what they are stated to be designed for, returning these for the Zeta AR to continue the Arcteryx love affair. For fit previously had the Beta SL in a medium which fit fine, but the Beta AR medium felt just a touch too snug