Yes, you might use it like that of course; this node is kept very simple so that it is more versatile and can be used in different cases. The node can do two things: attach a 3D Model onto a bone of an FBX model and detach it. Of course what you're looking for would also require a way to memorize the choices made in the customization screen and replicate those inside the game level; nothing too difficult to achieve in Buildbox.
Contact me at https://www.indymsw.com/#contact-us-section in case you need help with that!