The chains arrived and they fit nicely. I got them on hand tight and didn't need tensioners to keep them in place.
The chains are really heavy (69lbs each tire) and seem to work pretty well.
But the ride is surprisingly rough, with ice on top of gravel it is really bumpy driving down the road and I find it hard to use the FEL because the machine is bouncing around so much.
It will probably be better on a softer surface where the chain can sink in, but I got this for ice. I suspect I wanted the 'ladder' style.