Chris Swrote a review of Giro Empire SLX Shoes on May 11, 2017
Familiarity: I've put it through the wringer
I used to have the Northwave Extreme Tech shoe, but in a crash I damaged the ratchet and strap. I looked around to see where I could get a replacement for those small parts...and could only find a online shop in Europe. Similar situation with my shoes before that, except the boa mechanism wore out and the part was obsolete and hard to find a replacement for. To heck with that!
I saw these SLXs on deep discount, read up on them, and swooped in before Competitive Cyclist could come to its senses. These really are fine shoes. If there was one gripe I had with the Northwaves was that on very long rides my feet would tire. These Empires come with arch supporting insoles. That, combined with the comfortable upper, made a huge difference.
Because of the laces, you can't tighten them while riding. But warm up for a few minutes, retighten, and it should be good. The laces themselves can be tucked under an elastic band to keep them from going where they shouldn't. Unlike expensive closure systems, with these shoes you need only replace laces. So something lost, something gained. But the benefits to me outweigh the drawbacks.
Something else interesting. The shoes are really smooth and narrow. A triathlete did wind tunnel testing with them and found the Empires to be 4 watts faster (12 watts at yaw) than another shoe with straps and ratchets. This also means that you can put on Velotoes shoe covers and not worry about straps poking through the rubber.