Brent OKeefe wrote a review of Five Ten Hornet Climbing Shoe on July 25, 2012
First let me say that these are an amazing shoe with phenomenal grip and feel. I've been climbing with them since they first came out and I love them.
The only real issue I had with them is exactly what everyone else is saying. The sizing seems to be way off. I, like almost everyone else likes their climbing shoe a size or two small but these shoes are ridiculous. I bought my first pair off steep and cheap and after reading the complaints I decided to to with a size 9 1/2 because I usually go with a 9.
I got the shoes, they were way too small, so I returned them and tried for a size 10. (with no questions asked and no issues from back country) I got the 10's and they were still way too small! Fortunately for me, I live in Salt Lake so I was able to drive to Back country to try them on. I ended up trying on every size until a size 12 finally fit me, and that was still considerably tight on me.
I have multiple pairs of 5.10 climbing and approach shoes and I have never had an issue with sizing until these Hornets. Like I said, these are the best shoes I have climbed in but it took a lot of work to get the right set.
as far as the shoe itself goes, I give it four stars. But for the fitment, I have a hard time giving it one star.