Had the Sequoia Green leather case for my 13P. Was really excited, as I think hunter green colors pair well with the brown leather wallet from Apple.
Two main complaints:
1. The green is almost comically green. Maybe I just got used to the 12P Cypress Green, and even the 11P green (loved that - true hunter greens), or maybe its because the green felt "sprayed on" - like the brightness of it made the leather look cheap. But yeah, unless this thing patinas like hell, it just looks a bit cheap. Caveat: if you keep the brown leather wallet on all the time, it definitely helps, but damn...just miss the Cypress Green from last years lineup (silicone only, though).
2. Its already not holding up as well as pre-12 leather cases...a week in and it already is turning black/dirty. Corners chipping away. A real shame, as I was hoping Apple would take the negative feedback on their new "leather" and make changes. Guess not.
Normally I would go the Bullstrap route here, but I don't think their 13 lineup is out. Mujjo (with MagSafe) isn't out yet either, at least not until November here in Spain. Never liked the "siding" on Nomad cases.
So...for the first time ever...biting the bullet on the ESR leather (brown) case. I admit ESR always looked a bit cheap to me, as they always pop up on Amazon as the advertised alternatives, especially for iPad cases...but the pics here make me feel like its a purchase worth shooting for, especially considering the low pricing.
NOW...if only I could find a rugged case for my iPad mini 6

Or a leather one. Ill take anything at this point (minus Apples overpriced "smart" folio!).