Not sure if this has already been covered, but I noticed this recent post on the Box.com Blog.
blog.box.com/2014/06/support-fo … age-files/
Apparently they are now actively supporting Mac style package syncing, which may be useful to Scriv users. I think they may also be offering a set of APIs for devs to use in their software.
I’ve not tried this since I’ve got an already established workflow, but though it might be worth noting in case others wish to try it out. Use at your own risk etc… 