Get 3 shimano freewheels, that way even if one does fail you have a back up, or two.
Those WI parts do look very cool. The CNC work visually seems very sturdy and well thought through.
It all depends on how much you can afford to spend on your freewheel. Shimano is a massive player in the cycling world in terms of components, but then again a company like WI probably has slightly better standards because it has a comparably small range of well crafted parts.
That is your decision, between craftsmanship for those with deep enough pockets, or mass produced components for the masses.
This pedal for example looks amazing:
But with a RRP of $235, I'd probably stick with admiring the pic and buy something alot cheaper.