Well that is said but many pilots hang up the flying without a GL. However the saying is meant to keep you from being complacent.
Per FAR you don't need an enforcement if you were PIC of TW plane before April 15 1991. That applied to me but I had so little training, time and recency I did the dual and got an endorcement. A TW or Trike are airplanes and land similarly, slight tail low, aligned with runway near stall. (However on the RV4 near stall would plant tailwheel first and plop mains on. It worked but not as nice as a bit of speed and 3 point ldg.)
Unlike trikes, TW planes do wheel landings, you intentionally land flat, fly on and hold it down. The fwd location of mains on TW planes is different and ground handling, steerable wheel in back vs nose of course. Not to down play the differences, they are still planes and fly by the same physics.
(i)*Additional training required for operating tailwheel airplanes.*(1) Except as provided in paragraph (i)(2) of this section, no person may act as pilot in command of a tailwheel airplane unless that person has received and logged flight training from an authorized instructor in a tailwheel airplane and received an endorsement in the person's logbook from an authorized instructor who found the person proficient in the operation of a tailwheel airplane. The flight training must include at least the following maneuvers and procedures:
(i) Normal and crosswind takeoffs and landings;
(ii) Wheel landings (unless the manufacturer has recommended against such landings); and
(iii) Go-around procedures.
(2) The training and endorsement required by paragraph (i)(1) of this section is not required if the person logged pilot-in-command time in a tailwheel airplane before April 15, 1991.