Compatible rootkit scanners with Nod32 v4 and x64?

Hi everyone. Just a quick question, since I'm not very experienced in this area: What's the best rootkit scanner that plays nice in the sandbox with Nod32 v4, and is simultaneously compatible with x64 operating systems?

When I ran an older XP sp3 system, I used sysinternals Rootkit Revealer and also GMER. Both never gave any conflicts with Nod32. Unfortunately, both are incompatible with x64 systems, and as such a newer machine I have running Windows 7 x64 cannot use them. I was wondering what everyone's opinion and experience on this mater is.

As an aside, I've heard that x86 based A/V scanners are incapable of detecting rootkits on x64 systems. Does this mean that Nod32's anti-stealth is not active in an x64 environment?

 

interesting, it seems the security software market needs to play catch up.