I think it would be less likely because it would be more visible as to which ones are clearly hybrids. I think the ones being sold by the retailers are ~2", and BE probably has stock of some that are a little bigger. At that point, you could compare things and weed out the obvious hybrids, though some less obvious ones may remain. It seems like the spur is ignored sometimes, even when its drastically different, and I don't know why (because it's small/people just don't notice it?). If the description studied a good number of plants in the wild, and lists the spur as "0.2-0.5mm, simple", but your plant has a multi-branched spur that is a few mm long, it's not 100% what it should be.
The above hamata Rob posted is from an undisclosed mountain, so I have no idea what grows there, etc (tentaculata?). Jamban territory, IIRC, has a few species growing within a km or so of it, so theoretically at least, I would expect jamban to have a higher probability of introgression, but the plants that grow there may just have awesome temporal isolation, or something else that blocks out that possibility.
BTW those hamatas are awesome looking. Are they under really intense lighting, or are the leaves always like that? Regardless, I'd rather have one of those than the other ones circulating thus far. Very nice. Of course I can't grow it though. But in regards to things I can actually grow...when are those merrillianas coming out
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You're telling me. I'm still waiting on a 700m tentaculata. They're obviously out there, somewhere. I think you could make a killing selling those to all the LL growers.