So after the tedious and semi-painful transition from Paperless to Receipts a year ago (Paperless's inability to export anything useful being the main reason), I'm happy to say Receipts is still chugging along nicely with regular updates and improvements. It's far from perfect (you can't label/edit multiple files, for example, which would be a huge productivity boost), but at least it's not abandonware.
So are you literally using Receipts for receipts? I've used Paperless for financial/legal documents, so'd presumed Receipts wouldn't suitable.