It just looks like a normal USB device, no more exotic than many store-bought "gamer" keyboards.
You can theoretically configure the USB descriptors/IDs to whatever you want, so you could probably make it look a lot like a standard Logitech if you needed to.
I suppose you could do some very intensive probing trying to identify the signatures of TMK/QMK/VIA/VIAL behaviour, but given that there are off-the-shelf commercial products running QMK too, I could imagine that upsetting regular people.
You can theoretically configure the USB descriptors/IDs to whatever you want, so you could probably make it look a lot like a standard Logitech if you needed to.
I suppose you could do some very intensive probing trying to identify the signatures of TMK/QMK/VIA/VIAL behaviour, but given that there are off-the-shelf commercial products running QMK too, I could imagine that upsetting regular people.