I have tried Adriatic swell, Autoswell and a few other gate type effects on the Pod Go. None of them do this very simple trick well. Autoswell kind of comes close but does not reset the gate until the string has been muted. So if you pick notes in succession, the gate stays open, and only the first note of a run is "bowed."
The $99 Zoom GX1 has an awesome Swell patch that works great on single note lines to produce a legato slow-attack bowed violin-ish sound. All you need it to do is roll the volume up each time a note is picked sustain, and then quickly close and reopen when the next note is pitched. The key is it has to close and reopen with every picked note. I don't know why Line 6 neglects these seemingly easy to produce effect.
