Rated 3 out of 5 stars

It seems to require GnuPG v2. Won't install/work with v1.4.x

This review is for a previous version of the add-on (0.9.0.1-signed.1-signed). 

There is no requirement for v1.4.x -- what exactly was not working with v1.4.x?

In order to perform some tasks, you do need gpgconf installed, which is a part of GnuPG v2 -- however it is not required in order for the core functionality to operate.

If anything other than those functions that require gpgconf did not work for you under GnuPG v1.4, I would like to correct them if possible.