In South Africa, "professional tour players" are permitted to play with amateurs in club competitions only -- at the invitation of the organizing committee -- off a uniform handicap of +6. "Club professionals" are allowed to carry a regular handicap at their home course and play off this in competition at that club or at other clubs -- again at the invitation of the organizing committee. Obviously neither can compete in regional or national amateur events. The reasoning behind this is that it is part of the duty of a club pro to play golf with members.
Erik, I'm interested where fitters might fall on the bright line test? I've yet to have a proper club fitting where the fitter didn't also dispense some swing advice. My last one included a SAM Puttlab analysis and, basically, a putting lesson -- but I was ultimately invoiced for the club not the instruction. Is that guy a pro?*
(* Rhetorical question because I know he plays as a plus-handicap competitive amateur. Should he be a pro, I guess?)