Man I hate to be a downer, but that doesn't look like a good button at all. That hexagonal lip is just odd. I'm not sold on the keyboard style switches either, I'm sure they are durable but I bet they'd feel funny. The terminal connectors on the end and certainly too flimsy. I've used that gauge on electronics before and generally you can break the posts off just by looking at them funny.
I hope I'm wrong on it, but I don't think I am.