A lot of my clients new laptop comes with a pre-install of W8 built inside the laptop as I have in my ASUS laptop their okay and very safe and I do see automatically disabled when another AV is installed following me so far, some clients laptop don’t have a pre-install of W8 built inside the laptop just a straight W8 OEM version and when my client comes to me with a problem he/she doesn’t have their own W8 OEM DVD with their own license can be a major problem. So I had to clean out as much as I can without the W8 OEM DVD to reinstall from scratch is not very good idea and depend IF they’ve done a system image backup. Some Client don’t have the money to buy a W8 OEM DVD with their own license because some people are on the pension and I deal with these people free of charge, and I never had any complaints from these people who are on the pension when some computer guys keeps ripping off pensioners always break my heart.
I’ve never had client who wants to upgrade from W7 to W8 so far.