[Scott Johnston]

Since you know what AeT feels like running, I would shoot for that same feeling on skis.  However, skiing is a quadrupedal sport, so a higher HR will be natural as more blood is needed for the arms and poling.  You may notice that your legs get more tired in skating than in running because there is more isometric flex in the knee and hip and more quadricep work when skating.

Have fun with your new cross-training sport.

Scott