I've rented MTBs occasionally, but I'm taking about road(ish) bikes. I brought mine in for some maintenance, and the shop was gracious enough to send me off on a loaner until they finished. 🙂
It's amazing how you get used to think, and how shockingly different they can seem, even minor things. I have crit style bars, narrower at the hoods than in the drops; normal bars felt like I was trying to bear hug an SUV. Tiny differences in how the shifters work through me every time.
Anyone else get on a similar bike, and been shocked at how different it feels?