I just used SBD for an example in place of "DVC" to show someone how to add a coin to their interstellar.exchange Home panel. There is no "interstellar wallet" per say, it's just a menu that helps you access the tokens so they can be "sent to your wallet" - which is not on the exchange.
I used SBD for the example because I had already added DVC to my wallet before you asked me to write this tutorial and I wasn't going to delete the DVC (and untrust the asset - causing me more XLM to just reactivate it again) for the purpose of this tutorial because that'd be ridiculous - and I would've had to forfeit my 10,000 DVC tokens I have on Stellar as a part of that process.