Sean L.wrote a review of Thule Snowcat with Locks on February 11, 2013
Familiarity: I've used it once or twice and have initial impressions
first time buying the roof rack and loved it. I was not sure how strong the rack is to hold heavy wind of Sierra Nevada but no worry.
Installed on 05 Nissan Quest and drove from San Diego to Lake Tahoe total of 1200 miles and not even a mm movement. It was quite and strong. you will see some MPG decrease but that's normal for any roof rack. Wish the rack has some other option to attach to OEM rail because my rail was a round and this was designed to fit more rectangular rail. Overall very impressed.