Barrie, you have your view and should continue to express it as you wish ... some people find the comparison confusing, and it never seems to be people who "grew up" with 35mm cameras (like me) ... so perhaps you're right, and this is a practice that many newcomers find confusing ... it's taken me 9 or 10 months, but I have to say I no longer internally "translate" FL from :43: to 35mm ... my thought process goes "Shall I take the 17, the 20 or the 28?" Instead of "Shall I take the 35, 40 or 56?" ... but to begin with, it did help me visualise what I would be in the frame with the different lenses ...
The trouble is, having got used to this m4/3 angle of view malarkey, when I sell my car, a kidney and and the rest of my furniture to buy an M9, I'll be all confused again ...