I'm not aware of any keepers in the United States that has any K. tenuis but, I know of at least one in Germany that has them. You don't see them often because they can only be exported from Tanzania as F1, and I think the quota is 10? Also as far as I know only one exporter in Tanzania has the proper licenses to export them.
Yep, that is correct, Chase. There is a possibility that some will come in this year, but time will tell. Definitely a species that should be left to people with the experience to hopefully get them established.