If you have a share in an aircraft, the group rules are what count. The club rules apply to aircraft rented from the club.
Unless the club own the airfield, and it is an airfield rule, but I've never been asked about currency when PPRing to any airfield.
I am a group member, and last year rented for 12 hours as a member of a club. The club rules did not apply to the group plane.
I had a quick check out from an instructor if I hadn't flown the club Pa28 or Pa38 for 5 weeks, but flew the group taildragger back from maintanance without a checkout, although I hadn't flown its type for 4 months.