Anybody to comment about this? In beta, is it good? can it be run alongside avast?
I just heard about it from your link, but I think I can answer your question. It looks more like a utility you can run to scan your site(s), but it doesn't mean that you own the host server.
My meaning is that you can have avast running on your home PC, and you could have a web host running your website (externally). You can run this utility on your home computer, and tell it to scan your website(s) for malware. More of a website (or server) malware removal tool than a PC tool.
So that being said, I doubt it would be a problem running it along side with avast, being as how it doesn't scan the local machine that it's on anyway.
Oh, here's some info right from their main page:
Automated malware detection on externally facing web sites.
No software to install or update.