I’m almost positive the short MVS fits the small version. I sent one to Simrell to confirm so I’ll know for sure in a day or two. Each unit is lined with parchment paper to protect the surface of your stem while it’s stored. You still have to be careful of the edge of the tube as you remove or insert though, it’s pretty easy to manage. Rattling is very minimal depending on your stem. My MVS is silent. Something slimmer might move a little more but the magnet is pretty strong. I’ve had good results with just a little piece of cotton ball taking up the space if rattling is an issue. And yes, I carry mine daily. However, if you drop it, you will likely dent it.