Not that I'm an expert, far from it, however MY best educated guess is NO. Let me tell you why...
I. too, use custom install, always have, on everthing I have ever installed (I don't like being told what to install, and where.). Several versions of Nero ago, I learned that INCD was incompatable with win98 (yes, I still use that), so whenever I install a new version I know not to install INCD. Hence, I always "X"it out when I unstall. When I ATTEMPTED (cos I've yet to be successful) to load 7 not only was it already "Xed" out when I got to that place in the install, but I would have done it anyway. After two days of frustration concerning LOCKED drives whenever I tried to burn anything, I found that INCD had been installed anyway. I used the INCD Cleaning tool just cos I had run out of other things to try, and it found stuff on my system.
So I would say ALWAYS beware of straggler components.....
(sorry to rain on your parade), I think I"m going back to ver 6. Never had any probs there, and 7 has been nightmare after nightmare!