It looks like it will work. You may need like a pontoon on either side of the cleat, just like on SPDs when used on road shoes. Those are available as separate items. These images are from performancebike.com
It will help in walking since the cleats stick out on road shoes.
Videogames ruined my life. Good thing i have 2 extra lives.
Giant TCR2, Giant TCX, IRO BFSSFG SE, Salsa Casseroll, IRO Rob Roy.
They'll work just fine. However you'll be wearing the cleats down at a pretty fast rate if you do any sort of walking beyond just the usual putting your foot down at stops and the occasional bathroom trip.
You may want to pick up a set of road cleats with the aforementioned pontoons so you have better stability when pedaling and to protect the cleat a bit more when walking: