I unfortunately don't think this is possible in a modular manner. I would need to hard-code in checks for various different mods which I feel is a bit sloppy. I'll look into this.
It seems that I was wrong! I found a much more modular and effective method of adding belts than the approach I previously had. I have uploaded the 1.2 version of the mod which should support all belts from all mods that use the "loader1x1" prototype.