Hi Chris
I assumed your statement (You will have to consider that you cant backup Aworka like you can WCP they do the backups at their end, I have tried it and its a risk to be considered IMO just incase things go wrong) meant to imply that Aworka could fail and you and all your data would be lost which I'm sure you will agree is not the case, apologies if I misunderstood.
Aworka provides a local back up in the form of a commonly used csv file, which can be imported to another app such as George or used in an app such as excel or numbers, either way it enables trading to continue.
It's the same in the case of WCP, George or any other app, if they fail you'll need local useable data.