It would seem to me that the typical Christian would say NO...they would have to abandon their Hindu beliefs in favor of Christianity, or no good, they don't get saved.
That is the fundamentalist Christian view...and the Ten commandments says "thou shalt bring no other Gods before me."
Now, I happen to be a Unitarian Christian. and I have a different view than most other Christians...or so-called Christians.
Firstly, I do not believe in Trinitarian teachings. I believe that God the Father, God the son and God the Holy Spirit are one and the same guy...and not three seperate guys. Thus is the foundations of Unitarianism.
I am, by practice, a Unitarian Universalist...and the Universalists believe in universal salvation of all souls.
I'm not sure I buy into that Universalist belief, because there are some who do not deserve saving...some who have knowingly and willingly done evil, and are not only non-repentntant...but are in fact proud of the evil they have committed. Thus I say not all souls are saved.
I believe, as do Unitarians, in the inherent dignity and worth of each and every person. I also believe, as do Unitarians, in a free and responsible search for truth and meaning. I also believe in respecting the individual spiritaul path of each person, even though their path may not be the same as my own.
I further believe it is quite possible to be saved, and be on a different path than the fundamentalist yahoo "Christians" would say is the "one and only path to salvation."
Come on..."You follow this path...which holds these beliefs (which conveniently happen to match my own beliefs) or you go to Hell!!" Yeah...how much sense does that make?? How fucking arrogant is that??
Yet, that is the standard fundamentalist Christian response.
I have, myself, accepted the Lord Jesus Christ as my own personal Savior. I continue to practice my faith in a UU church, because I have yet to find a Christian church that isn't full of phoneys and Pharisees, and foaming at the mouth Freeptards!
And, more to the point...though many of our members in our UU church are NOT Christians...many are Muslims, Hindus, Jews, Agnostics, Wiccans, Atheists, and yes, some Christians, too...but I would say that, in my church...the people actually act and behave more in a Christ-like manner than you will find in the average "Christian" church.
So, as a Unitarian Christian...I would say that it is very possible for such a one to be saved, while still retaining his original Hindu beliefs...but I would be in a minority, I think, among self-described Christians in asserting this opinion.
In fact, if you like, you may read a sermon I delivered, prior to my accepting Jesus, to my UU church.
The link is below
http://www.wildflowerchurch.org/index_files/Archived_sermons/responsible.pdf