First of all, you never
put your data in the SVN.
For starters, its kind of a pain to ignore something after it was added.
But mostly, you never put anything on the SVN that you don't send to your client. Test data definitely does not get sent to the client (or you'd overwrite their real data with test data which would be a disaster!).
Also, SVN is secure. It uses https for all transfers making it highly secure and the repositories are encrypted and the only way to access them is with the user name and password you created when you set up the SVN.
But, secure or not, why pay for a cloud based SVN??? SVN is free and you can host it yourself really easily - you already installed it on your laptop and it took less then 10 minutes .. just install it on whatever computer you want.
Additionally, I offered my own internet based SVN service a couple years ago and you were profoundly uninterested. Nobody was. You told me the reason was because you wanted control over the SVN yourself -- so just install SVN yourself and keep that control!!
Now, regarding your other question - I think its actually kind of the opposite: Using SVN does not force you to get organized! It HELPS you get organized.
There's no need to organize things BEFORE you use the SVN. Instead, Start using the SVN first, and THEN organize things, using the SVN to help with the organization process.
Once something has been marked "ignore" by the SVN there is no longer any need to worry about deleting it or anything else -- its just an "ignored" file, not part of your software any longer. And the SVN itself is the easiest way to mark things as important or not important.
When you try to organize things before you start using the SVN you have to do so with Windows Explorer, where, if you're not careful, you can accidentally delete important things or move things around.. SVN protects all that, and guides you through the process of the cleanup. That was one of the main points of the presentation!!
Prior to the conference, you asked about how to organize your data .. and SVN is a good way. Additionally, SVN provides a backup in case you accidentally delete something or accidentally move things around, and it keeps track of all changes you make so you can easily find out what happened later, in case something did move somewhere or get deleted accidentally.
The whole point of SVN is to make things easier, not harder
Its not there to tell you to "clean your room" .. SVN is there to HELP you clean your room, (so to speak.)