I too have gotten ahold of the BSHW x Oaxaca cross from vermontman, after searching for the straight BSHW for a while. Coastal seeds had a BSHW release awhile ago, but I missed the window for them. I'm from near Big Sur, and love Mexican weed, so a Mexican based line that was acclimatized to the coastal mountains of the central coast ticks quite a few of my boxes.
There's been a few other BSHW crosses I've looked for but missed, such as the "Mexican hot chocolate" that is BSHW x Chocolate Thai. Still want that one...
Those coastal packs were pricey , $300, if i remember correctly. Likely worth it. I do believe vermontman got his bshw for zacatecas tribute from coastal seeds.