These are pretty rare in every day intermodal service. In fact, I only saw one ever. And that was just two months ago in the Netherlands and it was a 2m euro spec box.
Hi Daniel, if you get a chance to look at some YouTube videos of double stacks, you will see them. Not likely in the solid 53' container trains that have been trans-loaded, but in many other trains. It's kinda like when you are in the market for a certain type of car - you seem to see them everywhere, but didn't notice them before
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Here's a CSX train from 2017 with several canvas tops for example :
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Here's a video with a really nice mix of containers, including three Maersk canvas tops: Corona, CA, 2017; •
/>There are many others....
Hope you get a chance to check them out them in person
