Wow. I am really touched by all folks here leaping to my (well, v-engrave's) defense. I certain appreciate the response, especially because I've been pretty much ignoring the plugin for quite some time now. I've been hip deep in welding and manual machining projects of late, and my poor little Taig has been sitting on the bench partially dismantled.
That said, v-engrave is an open source project, released under a very permissive license, and people are permitted to use, extend, enhance, and incorporate the code as they see fit. So, as far as I'm concerned, no harm no foul. The author may have even tried to contact me; I got an email written in French a while back, but I don't speak French.