Yarn does not slip well over the plastic
The ergonomic features of the clover hooks are wonderful.  However, I purchased a K size hook and didn't realize that the shaft was plastic.  I gave it a try anyway but found that the yarn does not slip well over the plastic.  I had to go back and use a traditional crochet hook without the ergonomic handle in order to do the project I wanted to complete.  I would not recommend the plastic hook and wish there were an option for another material.