Thinking too negatively.
I wonder if there is any pure sub species these days? Probably near is about as good as you are going to get, with any of them, even island mating stations have hiccups.
I observed our bees over a number of years, they seemed to me, to resemble Amm in all aspects and I've done direct comparisons with colonies of Amm since then, they are practically identical, appearance, behaviour, characteristics. There are occasionally a few ginger bands here and there in some but most colonies are uniform, dark bees. I wouldn't pay for DNA testing, I just took advantage of an opportunity to get colonies tested, again out of curiosity to confirm or dismiss my suspicions.
At the farm apiary today with a visitor along to see the InstantVap in operation, he was quite surprised when I explained that none of them were Amm, all local queens raised at the farm. The sun came out towards the end of treating so I picked this colony at random as they were basking in the sunshine. One of our single brood queens, these produced six supers and the hive was rammed to the rafters. Uniform bees.
All colonies are still very populous, I didn't risk leaving the vaping ekes on, there were huge clumps of bees gathered in them as I went around taking them off. They'd be full of comb by next visit I reckon, I need to make shallower ones.
No Ivy scent and not a lot of Ivy pollen coming in despite a fair amount in flower but the hives are all nicely heavy at the moment. Almost all over again, time to plan for next year.