Probably better than Grivel, definitely better value
These crampons aren't quite as good build quality as my Grivel G12's but at the price are better value for money.
I don't think the anti-bott will work as well as Grivel but haven't used them yet so could be proved wrong. Spikes are spikes, decent materials, no issues there.
They are like a reasonable copy of Grivel's and there's nothing at all to complain about.
The one thing that is much better than Grivel is the sizing. G10's and G12's don't like accepting my chunky size 11 boots. They will go in but only just. These CT crampons go bigger, at least a size 12, maybe more and they are wider so the boot sits in nicely. Easier to put on and feel better underfoot than the Grivel's.
Would definitely recommend these over Grivel for size 11 boots.