Jesus said, in John 14:21, that whoever has His commandments and keeps them, he it is who loves Him. I can't find a command regarding requiring an understanding of Calvinism or Armenian-ism. Unfortunately, I can find hundreds of books on Calvinism and Armenian-ism, but almost none on Jesus's commandments.
” it’s possible that aspects of both doctrines might be true.”
It’s even more possible that this way of thinking is simply lazy, or comes from a misunderstanding of what each side actually teaches.