This isn't an AMS vs Sub Committee issue at all. In fact I set-up a magazine exchange between the two organisations, and initially the two clubs cooperated at model shows etc. The latter was rescinded for reasons unknown to me.
I also provide a report on the Dive-ins for publication in their magazine 'In Depth'.
I make no secret of the fact that I don't agree with the attitudes and behaviour of some of the AMS committee, but there are many within the organisation I count as friends, and they attend and thoroughly enjoy the Dive-in events. This is in spite of them not being advertised on their events calendar.
Unfortunately one person has migrated over to this forum with an axe to grind, and is spreading disinformation. I run these events independently of any organisation. They are open to all, regardless of what club you belong to, the small cost of entry is trifling when you take into account the cost of travelling to such events. What you do get to see are plenty of models, great facilities and a friendly atmosphere.