That convention is widely touted, but many 'professional' setters ignore it; admittedly some setters are better than others
Few of us will ever rise to that level . .
For mine one or two extra words make the 'inclusion' a little harder to spot, which is really no bad thing
To me the most important requirement of a clue is that it is fair to the solver
Conventions . . including ending a sentence with a full-stop . . are there to be tested
Signed: B. Ginna