I've had my vasectomy back in February of 2020, and noticed the same thing with the sensitivity of the cauterized ends. I definitely feel it if I'm sitting at a weird angle, and one of my clips is still palpable. That takes an almost intentional amount of effort to notice either of them, though, and they've gotten better with time.
Maybe it's just me, but I noticed that my plumbing feels like it works better. I definitely shoot a bigger load with more force than before, but I'm almost 100% that's all psychological and having no fear of knocking someone up means my dick isn't holding back any more.