Aims
Interesting, as we have the Alert Height of 1000'RA for the -NG too!
JW411
Indeed, to be considered 'relevant' for landing we use the 'above 60kts' rule too. JAR-OPS states this;
JAR-OPS 1.405 Commencement and continuation of approach
(f) The touch-down zone RVR is always controlling. If reported and relevant, the mid point and stop end RVR are also controlling. The minimum RVR value for the mid-point is 125 m or the RVR required for the touch-down zone if less, and 75 m for the stop-end. For aeroplanes equipped with a roll-out guidance or control system, the minimum RVR value for the mid-point is 75 m.
Note. “Relevant”, in this context, means that part of the runway used during the high speed phase of the landing down to a speed of approximately 60 knots. [Ch. 1, 01.03.98; Amdt. 3, 01.12.01]
again, my bold
So I think you are mis-understanding the 60kts bit. If you are ABOVE 60kts as you enter the mid-point (or stop-end), then those RVR minimums apply also (they become "controlling").
PP