Hello, I am a knitter and I LOVE my Swift! It goes with me everywhere and carries all my supplies and projects. When I run into a store I don't like taking the full bag with me and wanted something to put inside the Swift that I can take out and go. I was thinking of getting a Side Effect and was wonder if anyone has used these 2 bags together, does it fit well or take up to much space?..... how do you like the 2 bags together? I would use the Side Effect as a small purse with the crossbody strap that can be carried inside the Swift, but pulled out and use on its own when needed. Thanks!!