The MD High High Ride has been discontinued from the regular line. It may still be available as a special order item, but I can't vouch for that. They've also just released an excellent thumb break holster derived from the High Ride model. Since we're pretty off the thread topic by now, any questions/discussions should be posted to a new thread title.
FWIW, I've found the Blade Tech QC to vary from excellent to extremely poor. More than one person has told me of this problem of late. Lately a buddy and I have been working with Scott Evans/Edgeworks on some custom designs, and he's been extremely helpful in accomodating our needs. Give his products a look.