I have the Alter Ego, which is a textile jacket with a removeable shell to make it a mesh jacket. It uses a rain liner for wet/cool weather. I find it's comfortable to ~40*F with a sweatshirt, but I'm sure there's a significant benefit to having the textile shell over the mesh. Haven't tried it with the liner in and the shell off though, so I can't say for sure. I can say that I think the Alter Ego, or a similar jacket from one of the other outfits, is a great do-it-all jacket. I haven't worn my 3/4 length JR Tahoe jacket since I got the Alter Ego.