Hello,
So by default, no our plugin is not compatible with external services in this manner, as you have done above, it can be accomplished of course. Without changing the core files, there would not be a "clean" way to do this that does not get erased on update, that being said, if you would like to submit a code set to allow our pro version to work with the systems you need, we can certainly consider the implementation into a future build of our pro version. This is not something we could include in the free version.
Thanks!
Joseph
VFBPro Support