It is considered to be a 'permanent' bond, requiring tools and 'localized heat' if it ever needs to come off.

JB Weld would also be another 'permanent' option, although I'd prefer loctite because you could theoretically remove it later without damaging the wheel if you wanted.

The one in the picture is probably the one your friend at the shop mentioned - it's obviously held in place with set screws. (edit: from the description, he rigged this up himself. maybe contact the gonz lab for details).