"Do you think it's OK to omit the frequency and radio check call if you know that an A/G operator has only one radio?"
Is anybody gonna notice? I wouldn't lose sleep over it.......
"Also, with the different MATZ penetration calls. Are you saying use the military version of speaking to a military controller, e.g. MATZ penetration at Benson; and use the CAP 413 version if talking to a civilian controller, e.g. talking to Farnborough for a Matz penetration through Odiham?"
Is anybody gonna spot the difference? The air trafficker just fills the 'form' in. If he/she has any gaps and needs to know anything that you have omitted he/she will ask.
CAP413 was written by human beings. I think.
Therefore it ain't ever gonna be perfect.....
I've had some of my best flights by not talking to anybody. I wonder what trail of carnage I have left in my wake. No-one has ever complained. Well, not to me, anyway......