Not Marvin but you could take BookFusion for a spin. You will be able to read PDF, EPUB, MOBI, CBZ/CBR and several other formats while your highlights, bookmarks and reading progress will be synced across all devices.
We just released an updated iOS app which has several improvements.
https://itunes.apple.com/us/app/bookfusion/id1141834096
Additionally we also have a nice Calibre plugin to allow you to easily sync your eBooks across all your devices. More at
https://www.bookfusion.com/reading/calibre
PS: Founder at BookFusion. Please feel free to PM me with feedback or suggestions.