You know what, I don’t think I have. So, fair warning, I’m really not current on Spider-Gwen – I read the first trade, then read the Spider-Verse stuff, then fell behind five issues into Vol 2.
I would argue that Spider-Gwen is one of the best uses of the multi-verse AU concept in the past few years: it started with the idea of taking the very first Dead Girlfriend and turning her into a superhero in her own right, the costume design was top notch, but equally good was taking the AU concept and running with it to recontextualize familiar Marvel characters. Gwen plays in an all-girl rock band called the Mary Janes, Frank Castle is a rogue cop instead of the Punisher, and so on; my personal favorite is an evil Matt Murdock as the Kingpin’s lawyer and right-hand-man.
Needless to say, I’m very much looking forward to Into the Spider-Verse.