the funny thing was that ismailites I've met next to Musyaf, that is old assassins' stronghold, tried to convince me that ismailism is a knowledge, not a religion and You can be a christian ismailite
No offence, but once You've asked it, I consider shiism in general, and especially its non-12-imamites branches, a bit, well, strange

. If I believed Muhammad was a prophet, I would be a sunni. That doesn't mean I like sunnis more than shiites, just I find them more comprehensible and more in accordance with Muhammad's teachings.
I study arabic / islamic studies, but I never took the time to get to know ismaili doctrine thoroughly, which is a shame. Where the knowledge of ismailism could pay off is my thesis, about persecution of christians under caliph Al-Hakim bi-amr Allah...
It would be interesting to know if ismaili view on christians was different than sunni, and in what respect. But I don't see much possibilities of checking it, I have too many historical sources and other books to read anyway.
I also think that it had little to do with ismaili doctrine or tradition, just like Al-Hakim was in general an unorthodox ruler... How do ismailites perceive him? and drusism?
ismailites = 7 imams,
ithna'asharites = 12 imams,
so I guess it's 5 more imams