Installed and testing a CTRL-V image (Nope, didn't work)
Testing drag'n'drop: Worked!, draged direct from my Sreenpresso window, NICE!
And doesn't muck up the previously installed inline extras
FYI, there's a substantial "gotcha" with them combined when using multiple attachments: the inline plugin doesn't know about the advanced attachments. So if you use advanced attachments to add multiple attachments (identifiable by the images being uploaded in real-time, adding a thumbnail immediately) instead of clicking the "more attachments" link to add another file chooser), the inline plugin doesn't know this, and sees only the first one.
In the test above, the hare with rifle and Perry the Platypus were uploaded (in that order) using the advanced attachments upload, having selected "inline thumbnail". It only inserts one insert tag (with attachment ID 1), not two. The fox with binoculars was uploaded using "more attachments" to add another file chooser, and it correctly incremented another insert tag (with ID 2).
Expected/desired behavior would have been for the hare to have ID 1, Perry to have ID 2, the fox to have ID 3, with an inline thumbnail of all three. Instead, the fox got ID 1 and an inline thumbnail, Perry got ID 3 but no inline thumbnail, and the hare got ID 2 and an inline thumbnail.
Additionally, the advanced attachments plugin ONLY applies to the first file chooser. Any additional ones added by the "more attachments" link retain strictly the old 1 chooser == 1 file behavior, where selecting another file replaces the previously selected one.
None of this is a deal-breaker (they're still useful plugins), just something to be aware of when doing complex posts with multiple inline attachments. In that case, it's probably best to attach them as traditional attachments and then go back and edit to insert them. But using advanced attachments for multiple "traditional" attachments works great.