This is a Cleveland staple for sure.
I can't give a full review because I have only had these sandwiches show up at work when vendors buy them for us, but you really don't need one with 500 other detailed reviews. Free food is best food.
I've never been a big fan of corned beef, but Slyman's changed my mind about it. The huge sandwich is a solid 2 meals. It's perfect with a little spicy mustard. Hopefully I get to visit the place soon because it looks like cheese and toasted bread would make for an even better meal.