Hi, thanks for your work.
The normal mode of gocryptfs works fine in my macOS, but the reverse mode doesn't work:

fs.Mount failed: read-only file system
Maybe you should run: /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse

I don't have /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse,
but I tried /Library/Filesystems/macfuse.fs/Contents/Resources/load_macfuse, which had no output and gocryptfs still failed with the same error.

My macOS is 10.14.5, and I compiled gocryptfs by:

Install Macfuse
Install go
Download / Clone this repository
Run bash ./build-without-openssl.bash

I tried gocryptfs -d -fusedebug -fg -reverse plain cipher, and the last few output:

23:57:24.475219 rx 3: ACCESS n1 {u=501 g=20 x}
openBackingDir "" -> 10 "" <nil>
23:57:24.475374 tx 3:     OK
fs.Mount failed: read-only file system

I appreciate your help.