Im slightly surprised to hear you (as an S7 modeller) say that
The same argument could well be applied to inside motion or indeed details like track chairs..... In for a penny and in for a pound and all that
ill open my can of chocolate worms
And a nice big bucket of worms it is too
TBH it wasn't a difficult decision to make. Events over the last couple of years meant that I had long, long hours of thumb-twiddling with little opportunity to do to anything except sit and think or read or write. To turn that negative time into something positive, one of the things I did was create list of compromises I'm prepared to make to enable the railway to progress as and when the opportunity rose to work on it. At that time there was no indication whether that situation was going to last weeks, months or even years, so once the pros and cons of using AGH wheels had been listed it was a simple decision to drop them into the 'can do without' pile, along with working inside motion for locos with side tanks, working brakes, reversers, opening smokebox doors, opening carriage doors and so on.
Bullhead chairs representing the individual companies slipped easily into the 'things to retain' pile for two reasons - 1. they are on permanent view, and are seen from all angles, 2. butchering them could be done during the long thumb-twiddling hours, so it wasn't time wasted.
Here are the pertinent points which contributed to my decision not to use AGH wheels:
1. Alan's wife had died and he was very ill himself, and it looked like he was going to begin wrapping the business up. This turned out to be the case and as far as I know the range has now been discontinued, and no one has taken the option to buy the business.
2.. The range was limited and covered only a small proportion of wheel types I need, so Slater's wheels were going to make an appearance anyway.
3. Archaic tanks feature heavily on BF, most of which will run in tunnels or deep brick-lined cuttings. I once remarked that I might end up modelling the most detailed S7 carriage roofs in the country but have them running around on brio wheels and 8" lumps of 2" x 2" and no one would ever notice...
4. The aforementioned tanks invariably have outside brake pull rods, some have condensing pipes running between the frames underneath the axles. Just how much hassle do I want to commit myself to just to install some wheels which for half the time won't even be seen, and for the rest will be subject to motion-blur? Remember I'm not thinking in terms of half a dozen locos in total, but eventually somewhere between 40 and 50. It's quite an undertaking.
5. All the express locos and suburban tanks on GE lines are almost always going to be over 4' away on a viaduct with parapet walls. They are almost always going to be running at speed which means the subtleties of the AGH wheels simply won't be seen.
Now, here at the bright end of that long and dark tunnel I've not regretted those decisions. However, if I was building a bucolic branch and AGH were available for the one or two locos needed to run the line, I've no doubt that my opinion on the matter would be skewed in favour toward their use and all the extra time needed to build in demountable brake hangars, pull rods and the like would be time well spent.