OmniGroup's new (optional) subscription plan for OmniFocus

I’ve been interested in this but I’ll need to know more details. Right now, I use OF on my iPad and iPhone and can’t do without it. I love the way OF has helped me organize my law practice. Because my home and work computers are PCs, OF has been limited so far to my IOS devices and that has worked well. I’m intrigued by the web version because now I’ll have PC access but I’ll want to be sure that if I don’t like it, I can stop my subscription without compromising my database. The proposed cost is not cheap but this is probably one I would be willing to pay for.