Hello Tom,
Currently this product has same effect on all users, there isn't per user settings.
This may be added later in future release. As I see it's really nice & has potential advantages (
I've added it as a feature request HERE).
Regarding quick editor features, it isn't included in this product. It's available as a separate product currently & will have significant updates in the near future.
Last but not least, displaying the quick reply box under the post from which you clicked 'quick reply', it's a new feature in vBulletin 4 by default & our product supports it as well.
Please don't hesitate to suggest more features, I'll be happy to hear from you

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Best Regards
Abdelrahman - PHP KingDom