The "transfer" works well for James 2:19 but not so for Romans 10:10. One can assent that God is one and not be saved but one cannot assent to the propasition "For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation" and not be saved.
In other words, in Romans 10:10 we have trust that always accompanies assent. The "transfer" only works so far between men and demons or angels. The taste we get from Our Lord is good as experienced by angels and bad as experienced by demons.
Brother, I hope you can see the contradiction in your statement above. The assertion, "The 'transfer' works well for James 2:19 but not so for Romans 10:10" can't both be true, and speak equally about the same thing, else the Holy Spirit is schizophrenic, which we know He is not. This is where the perspicuity of Scripture must come into play, letting the clear passages speak to the ones less clear, or demonstrate that in fact, they are two separate categories altogether. Rev. Winzer has properly pointed out passages that speak directly to the subject. However in your response, one of these passages, as a category, pertains to "historical faith" (James 2), which speaks directly to the subject at hand, whereas the Romans 10 passage is speaking of justifying faith
prima facie. If pressed, you will actually find that Romans 10:10 as a derivative, supports the Reformed understanding by the use of the word
καρδια, "heart", meaning
"feelings or thoughts" and not mind
διανοια alone (see Matthew 22:27). What you are arguing for is not a part of the old paths of the Puritan and Reformed tradition. See
here for a further opening of the idea of saving faith in distinction form mere historical.