Bumping this thread to say thank you to all who made and contributed to this tread!
I attempted to replace the rear wiper on my '12 XL trim. The wiper was showing its age. Bought a replacement from Costco after looking across various auto part stores to try and find a replacement. Wasn't gonna spend what stealerships wanted for an "OEM" blade. Now I understand why auto part stores don't carry them... Took off the old blade after some wrangling. Only to then discover the one from costco (and a few others) didn't fit, even with various adapters provided. How hard is this supposed to be?!
Put the old blade back on, only to discover the plastic hooks holding the blade cracked and won't stay in place if not pushed against the glass. Vowed to replace this stupid wiper arm design and stumbled across this thread. Immediately went for option #3. Thank you!