I was raised in the Bible belt and I practise kundalini yoga, at least Ravi & Ana's version of it, which to me is sort of 'kundalini lite'.
I am not now a practising Christian (I am Buddhist now) but I think I have a perspective that might be useful. I think that SOME Christians might find the chanting in Sanskrit uncomfortable. ("But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking." -Matthew 6:7) And the actual translation of some of the chants MAY be objectionable to some Christians:
Ong so hung--Creator, I am Thou
Ra ma da sa say so hung--Sun, moon, earth, infinity, I am thou
Sa ta na ma--Infinity, life, death, rebirth
Guru guru wahe guru, guru ram das guru--Dispeller of Darkness. Infinite Wisdom. Wise is the one who serves Infinity. (that's one translation anyway)
I hope these examples are taken as they were meant--I have presented practices and concepts that I do think that some Christians might have difficulties with. I am not trying to be controversial. I do think it is possible to practice kundalini yoga and be a Christian, but there may elements that can be perceived to be incompatible.