It is the same 1004 in both cases - the only difference is that in one, the appraiser inspects the subject, and in the hybrid version, the CDC person inspects the subject.
I did not bring up desktops; you did. I personally did very few desktops, and most independent fee appraisers have only done a handful. The res lending the destkops I am ware of are low-paid quick-turn-time, short-form products. I assume staff appraisers might do a volume of these? I have no idea, I do know that as a fee appraiser from time to time an offer would come to do them for cheap fees with a bizarre turn time estimate of 30-45 minutes - the few I tried took me 3 hours and I never did one again.
A desktop is a low bar product one assumes is for a specific use on the client end .