I know James Patterson writes like that, following his detective protagonist in first person, while cutting away to third person scenes to show his readers what the killer is up to.
I don't know that I've come across any erotic short stories like that though. I started to write one myself recently, with about 1,000 word scenes in first person, with 250 word third person inserts to reveal necessary plot points outside the main character's observation and otherwise break up the time between scenes. I actually thought it was going quite nicely, but the story itself was too much of a grind, so I gave it up.
As for the flipping between perspectives, I thought it was important to keep them consistently paced, hence 1,000 words in first and 250 in third. The first person sections took their time to explore things, whereas the third person bits inserted snipets of tension. I imagined it a bit like a movie, watching the family happily going about their business, with short cutaways to the bad guys thundering up the mountain path towards them on horseback.
I guess my point is, do it for a good reason. Otherwise it might just look like you couldn't make your mind up. Good luck with it though. I'll be interested to check it out when you're done.
My latest story is a racy little piece about what happens when someone cute from work invites you over to watch Netflix and Chill. Interesting you mention this.
The current story I'm working on, that's headed more to the length of a novella, employs this. However, based on the content of the story, it's genre, and the intended purpose, I've been able to streamline it effectively. And it isn't throughout the story. It only pops up in basically one extended scene.
You really have to be skilled to do it though and the intent has to be clear.
Six years ago, I was writing in collaboration with another writer in the UK, and we began a sexualized re-interpretation of a famous epic tale from Sumerian mythology by passing the introductory storyline back and forth between her first-person POV, and mine, until our characters met and began their journey together, at which point we changed the narrative to third-person. I have been struggling to edit this work to be suitable for presentation here on Lush, but the 20,000 word-count, and the change from 1st to third person narrative has been a challenge. I considered marking each section with a symbol or legend: 0oo for my first-person part, oo0 for Melissa's, and then o0o for the third-person narrative, which constitutes the greatest portion of the work. If any mods reading this have a better suggestion how to handle this, I'd be interested in considering their suggestions, short of converting the first-person introductions to third-person, which would substantially diminish the meaning of the story.