It's useless as:
If you will run into any issues or anything, you are on your own. You contact support and they will tell you legacy app is no longer supported. In that case, why should I pay £40 a year to fix bugs myself?
EDIT: I do not mean to call your help useless. Apologies if it came out like that. I am calling Evernote treatment of Legacy app as useless. Sure, they offer Legacy app but at the same time they blank out tell you it is not supported and if you contact support, they will tell you to upgrade.