An interesting thread, somewhat close to my own experience. I too, am in the process of ditching the enamels after more years than I care to say! I was given a box of part used acrylics earlier this year to experiment with, ostensibly to speed up my wargames painting! I have persevered and have even painted my first entire large scale figure using them (Ralph, Lord Stafford, on a recent post)
I have just purchased some retarder to try, as this was the final test before completely binning the enamels. I will let you know the outcome! However, I have found acrylics great to use and has speeded up my painting no end. The metallics are great to use and the advantage is that I can use acrylic washes over them, something that I could never do over enamel metals.
The final push for binning the tinlets was after partly completing a commissioned piece, I bought a replacement colour, which I have used for years and found it had completely changed shade from the previous tin!!
Regarding your original query, I always use a solid basecoat of shade and highlight, then an almost drybrush of metallic just to give it a glint, as I also, do not like bright metallic lacework!
Sorry if I went on a bit, or hijacked the thread, but Ive found this quite cathartic!!
Steve