I recently came into possession of a MM S. Calceatum (Looks like it could be a H. Mac, instead).
I have sent an email to see if Tarantula Canada would be willing to take him, and they said they already had males of both species, so they might not. I've yet to hear a final word from them on the subject.
The previous owner said that it's last molt was 6 months ago, so this guy needs a date ASAP.
EDIT: I can't see the pics