For a long time I used a pretty gloss purple marble loopy case for my s20, until its loop broke. I also had this stealth black that I got intending to customize but never did. I ended up loving the matte texture and now shopping for a case for my phone upgrade, there are a lot of gloss designs I'm reeally into but it's hard to part with the matte texture. That is now a narrowing factor in deciding my next loopy purchase. More fun/iridescent designs in matte finish please!
As someone who does acrylic art I have a gloss spray sealant and a matte (satin really) spray sealant. I could weigh getting a gloss design and using my "matte" sealant but with loopys being flexible I think my consumer-grade finish would crack, if not ruin the loopy case altogether.