Hey folks, I rarely pull my hands out of the soil long enough to type a post but I've read many of the other grower's writings here.
I sent some of the above tasty photos by "alpinehi" to a breeder in Washington whose strains I've been growing the last couple of years.
I think it was Annunaki Genetics who very likely bred your Purple Pineapple plants.
Annunaki Genetics made a Purple Pineapple Express around 2013, and when he saw "alpinehi"s photos he said:
"I have to say Im nearly positive that's Purple Pineapple Express (#4)!
The full plant photo, the color and shape of the buds, the resin and pistils all look the same. Quick finisher and purple throughout flower too.
Plus I'm about 1.5 hours from Canada, so pretty close!
PPE#4 is being passed around via a couple large nurseries in CA even today."
So hopefully you can score a clone or check out another unique pineapple express hybrid "Sour Pineapple", as regular seeds.
https://annunakigenetics.com/index.php/product/sour-pineapple/
I know I sound like a shill for AG, but I love when fruity And dank combine and the AG strains I've grown were damn delicious And potent so I'm a big fan of his work.
Here's a Sour Pineapple (from the AG site, I have Not grown her yet).