I still stand behind the efis statement. I do reccomend that that you fly your private in something else where you can really gather some stick and rudder skills and get used to the round dials however.
I will admit that round dial experience is essential...however, if you can be relatively assured that you will NEVER be flying them then EFIS experience is just as valuable. Times are changing in aviation training and I saw the glass training at my school really start to pick up. Mostly where I saw it was business men from the city would train in a glass cessna and then buy a Cirrus after either a hundred or so hours of cessna glass time or after their instrument program. Those students will never fly steam guages so it is a non essential skill. I suppose the same argument could be made that everyone should learn to drive stick. Certainly a valid point but if it is in that persons control to never own or be in a position to drive a standard than it is a non issue.
I am with you guys in your logic and followed the same path you speak of and encourage others to do the same but if this is all true it is a different scenario and needs to be approached differently. He should transition to EFIS preferably a system he will end up in and he should learn the ins and outs of it and all that it has to offer.
You can not stop the 45 hour wealthy men from buying the cessna 400 or the baron so do not fight that logic. Instead train them to be as competent and profficient as possible in the equipment they plan to occupy the most. IF you did go the round dial route one thing of promise however is that you can safely manipulate glass in as little as a 6 or so hour transition as I have taught many of them. A few hours on the ground sim, a few flights in the air and you will have a license to learn as far as glass is concerned. Either route, all is not lost.