We've been down this road before regarding this description, and a couple of years back Nigel gave his thoughts..........
""As for psuedo-cameo, this was the phrase used to refer to this type of glass ware when I first entered dealing 26 years ago. It has taken all this time, despite intervenning knowledge to correct. I suggest that it came about through someone latterly using the term and it catching on with collectors and dealers, and the mistake snowballed. Actually, I don't think it really matters how it arose, rather that we now use the right terminology.
Cheers, Nigel""
Trouble is that I'm now not sure what Nigel was saying the 'right terminology' should be
It's unfortunate that the expression was used in both Woodward's book and the Dennis Hall catalogue - sources that would be thought of as providing correct information.