Yikes, this bit about frosting is always disconcerting and repeated on these Boards ad infinitum. I think it arbitrary but convenient to define ex post facto what is and is not "VIP (Record)". The 1937 Crown is particularly problematic if one lets it bother him/herself. I am fine with a nice mark free 65 proof in Cam or DCam as a decent proof, and save the arguments for when there is little else to do. Frosting on a particular coin is a function of so many processes, and many were not always fastidiously employed and so hate to use that as a sole criteria. I like metal and strike quality as well, and though I admit some pieces are a bit better than even a 65Cam (not sure if that is so with a DCam though), can not fathom a huge price differential.
I'll be impressed when somebody shows me an XRF done on a specimen that shows sterling rather than 0.500 content. Proofs are quite something in the silver/CuNi series from Vicky to E2 as quality is all over. I think I have shown before my 1839 half crown that is much finer in presentation than proofs struck 125 years later, but coins such as the Wreaths that are almost always better described as "Specimen" IMO than proof leave much to be desired. This VIP status thing has its limits.
I might also add that I have had some discussion with Steve Hill about the Bull apparent attempt at dividing "regular" from "VIP version" proofs of G6, particular to the non-standard year proofs of the 1940s, and we are both of the opinion that the latter is not a separate category and is erroneous as his are listings for many coins from the 1940s that are listed as mattes but yet to be confirmed...