You're right it's not a "Makers Choice" the seller never said it was, he said it's a "One Off" which is different.
Makers Choice have custom carved handles and clip and nano coated blade which are one of a kind made in limited numbers of around 25.
One Off knives usually have handles that have 2 tone handle coating and/or nano coating but no customization of handles. I do not know how many "One Off" are made per run.