I understand your point.
What I had in mind was those tools sometimes delivered by Microsoft or antivirus companies that were very light apps specifically created to search just for specific virus and deactivate them.
They were like specialized mini-antivirus apps, fast to donwload, which performs much faster scans, not having necessarily to be in conflict with existent antivirus.
I think of it because I've heard of specific virus that search for wallets, so may be a direct counter-attack to this problem will be needed someday.
Maybe iam totally wrong by saying that there isn't any bitcoin specified virus, all a black hat can do in order to steal your wallet is by sending you fake email with a phishing link appears to redirect you on blockchain looking page and ask you to login or a keylogger to trace you key strokes and screenshots, trojan bot do the same and a wallet stealer which also requires you to login. So a light app anti virus won't serve the cause a good pro anti virus plus a bit of awareness is all you need to protect your coins not forgetting the gox mess in which all you can do is just scream and abuse cuz no software can protect you from scamming for sure so use your anti virus commonly known as brain
Edit: Its good if you are implementing one go on and i am in no sense criticizing you
