The Virus is 100% digital - to the point that its Total Integration (what the TI stands for) technology allows it to stream its audio digitally into the Virus Control plugin, without an interface. So the question is kind of moot.
As for recording analog audio through the interface...you didn't really say which of the 20+ interfaces in their catalog you're talking about, but I'm guessing it's one of the lower-end Scarletts or Saffires. Yes, the Apollo would be somewhat nicer, but would it be noticeably nicer just recording line level audio through it? That's up for debate. The definite upside would be that you'd get to use the UAD plugins, which are nicer than most.