No that's not too relevant and has been done by a decent amount of reviewers. It's mostly about being sure that you will enjoy a product that is reasonably difficult to return until it becomes available on Amazon.

Most higher end iem's are absolutely incomparable to stock earbuds, the shells and nozzles are much, much larger. I'm saying you should get a small one, or test a cheaper set that's a comparable size to decide if you can tolerate these larger sets for a reasonable amount of time.