Really enjoyed my meal here. On top of the fun experience, all of our meals were delicious. When you arrive the host helps you learn some basic signs so you can communicate with your server, which was really helpful getting started. There's a guide to some other helpful signs on the table and every item on the menu (other than the daily specials which you point to) has a diagram to help you sign it. Our server was very kind and helped us with our signing when we weren't sure what to do. All in all it was a really enjoyable experience and I'd definitely go back.
The prices are a little bit high, but their lunch menu is much more reasonable and has many of the same options available.
I've been to ONOIR as well, which was a good experience, but I didn't really feel inclined to go back. It felt like more of an event than a dinner. Signs on the other hand feels more like a regular restaurant where you can just sit down and have a good meal. It's more akin to visiting a restaurant where everyone speaks a different language, which for anyone who lives in Toronto, should be a pretty normal feeling. So don't let the signing intimidate you, it's worth the visit.