Has anybody made any progress with this?
I had been using Dropbox and had my iphone set up successfully to see the public link of my OPDS _catlog.xml file. I have now moved to using Sugarsync to gain more free space (5gb) - this has been very successful with Calibre, but I have not been able to set up my iphone to see the OPDS catalog. I can see the .xml file in My Magic Briefcase. However, the public link does not seem to provide a typical pathway:
https://www.sugarsync.com/pf/D362665_6114551_862166
Has anybody managed to set up an OPDS catalog with Sugarsync and been able to read it on their ithing?