Baptists have historically agreed on this particular point and even Arminius himself never actually denied this teaching. He questioned it based on some troubling texts, but never officially took a stance against this teaching. After all, we all agree upon the effectual power of regeneration, we just disagree on the order. Thus, once one is regenerated (whether through faith, or through God's unconditional effectual working) that individual will remain regenerated. I believe the question, "Can you lose your salvation?" is the wrong question. The question should be, "If one appears to fall away from us, were they really ever of us?" I believe 1 John 2:19 answers that question very clearly. What say you?