The size is still a bit awkward in the pocket. However, I don't really even think about it most of the time anymore. I haven't worn a lot of shorts while carrying the iPhone 6 plus yet, so that may prove to be more awkward. However, I need some new shorts anyway, so I will get cargo shorts and it should rectify any possible issues.
It really is all about the apps
Safari - it simply looks a lot better on the larger screen.
Flickr - looking through photos is no longer a huge compromise.
Overcast/Downcast - the excellent landscape mode makes it easier than ever to hit that 30 second skip.
Rdio - the album art looks even better. Would be nice to see them add a landscape mode, though.
Plex - The best way to get media from your computer/NAS to where you are. Looks much better with the larger screen.