I'd argue that a device that also happens to render the user invisible is not inherently a cloaking device.
A flintlock pistol is not legally a firearm in the US, and that distinction matters to quite a few people around here.
Now, ultimately the end result is the same (invisibility/shooty stick go boom) so in the end, the romulans would still consider it a cloak.
That's the neat part, they don't!