Fujifilm X-T4 Leather Cases
The KAZA leather half case for Fujifilm X-T4 has now been released. To access the side door you have to take off the whole case, but you still can access the battery door with the case attached. The Kaza leather should soon be available at the Kaza AmazonUS storefront and at eBay.
Also the GARIZ leather half case for Fujifilm X-T4 has been released and is now available at eBay here. It uses a metal plate on the bottom and it looks like you can still access the side doors.
You can find GARIZ leather cases for Fujifilm cameras at AmazonUS here.