Hi Hrabil and thanks for commenting. Addressing the changes in the new (released Oct 23) Comodo is on my list of things to change in my canned text this next week.
Like so many of the security program makers, Comodo is also pushing people to buy their "suites". As noted, I feel this limits user choice, and introduces single-point of failure vulnerabilities. I don't think what I feel matters much.
The new Comodo does indeed now includes an AV component too in it's free "Comodo Internet Security", formally just "Comodo Firewall Pro". Based on the reputation of Comodo and the Comodo Firewall Pro, which already contains the HIPS component, I would expect Comodo AV to be a fine performer too. The problem I have is I can't find where their AV has been tested by any of the major labs that I am aware of.
ICSA Labs
virus Bulletin - AV-Test.org
AV Comparatives
I cannot explain why. Did Comodo not allow it? I don't know.
I use Comodo FW on this machine and can recommend it. Based on that, and the screen shots at Comodo, I would expect you can disable the real-time anti-virus protection feature of the Comodo AV, and use the real-time scanner of your choice. But I have yet to install the new version to see if that is so. If so, I would expect it would make a nice supplemental scanner just to have on hand.