It really depends on how much grip work you've done in the past. I found it to be an intense program and would not recommend it for beginners. I found that even though my hands had toughened up by the time I did it the second time, I still taped my fingers, and at times my palms, as much as i needed to allow me to continue the high reps and as little as possible to allow them to continue to build callouses and adapt. I found the key for me was recovery, recovery, recovery. I massaged them every day, stretched them, tried to get a full nights sleep every night and for me the most helpful part was soaking them in ice water, then hot water, back and forth several times.
It's also recommended in the program that the only grip work to do is KTA and all other types of grip work is put on hold until after the program is completed. That would also be my recommendation.
Trained a bit yesterday. Didn't have my training log with me so going from memory
Saxon Pivot top
RH - 8x 75#, 8x 75#
LH - 5x 75# 5x 75#
2H - 5x 120#, 5x 165, 20x 190#, 20x 165#
Clean and presses with catch on way down - 80# multiple reps RH, 100# Singles RH
DL RH 5x 100#, 16x 120#, 8x 120#
DL LH 9x 100#, 5x 100#
Arms & Shoulder workout.
Trap Bar DL
One gripper attempt, tried to prime my CNS this way, didn't work.
Inch Trainer (RH)
44.80 kg - 20 reps, this worked better.
79.70 kg - 2 attempts that didn't leave the floor.
79.70 kg - 1 attempt from two 5 kg rubber plates, got some air.
79.70 kg - 1 attempt from two 20 kg rubber plates (on video)
79.70 kg - 1 attempt from one 20 kg rubber plate (on video)
Finished with 2 sets of 20 & 30 second holds with the Euro Pinch (42 mm)