I really like the switchback II jacket.  Particularly helpful is the ability to tuck the jacket into a pocket which becomes a compact packet.  However, I was on a hike in Arizona with the jacket tucked in which also provided a place to hold my car key on the trail.  After the hike, I was unable to unzip the pocket after numerous tries, which meant I could not get to my keys.  The zipper would not budge at all.  I had to borrow a scissor at the ranger's station to make a slit in order to retrieve the key (for a rental vehicle). Fortunately the slit is inside the pocket but I now have limited use of this handy dandy feature. I have had similar Columbia jackets in the past and this never happened so I certainly have had experience with this pocket .