I had a set of Shure SE530 that were over 2 1/2 years old. One of the nozzles broke off. I contacted Shure and returned them. They sent me a brand new replacement at no charge, and the replacement was the new model SE535. No questions asked. Hard to beat that kind of customer service.
I may be wrong but I would think that Klipsch would do the same thing. They cannot take a chance of you telling a bunch of people that they wouldn't take care of a problem regardless of whether it is in warranty or not. If it is from abuse, that is a different story, but under normal use they should certainly last longer than that. I will be surprised if they don't take care of you.
Among several sets of IEM's, I own a set of the S4 and I really like them. An incredible bargain - I paid $65 several years ago. After at least 100 hours of break in (yes, it takes that long for ANY quality headphones or speakers) they really come into their own and sound as good or better than others costing twice as much. Throw away the tips that come with them and get some $15 Comply tips. The difference in sound and comfort is huge.
Good luck,