I've got the switchbacks.
They fit the bill for what I wanted, i.e. a sole that was suitable for hikey-bikey in scottish hills, but with a lighter, racier upper than the hiking boot style SPDs.
I don't notice the cleat at all when walking, and the soles seem pretty grippy and aggro.
I'm a bit worried that my big toe seems to be burrowing out the top of the upper, not good for £110 shoes! Hopefully a bit of Freesole will stop it developing into a bigger hole…
I've got a 43 when normally I would take a 44 so watch the sizing…