When you look at that guys training, look at how much volume he uses in his 10-12 weeks of 'regular' training between the cycles of 20 rep squats. Then note how drastically that volume drops during his six week, 20-rep squat cycle, including three full days off after his squat day. A guy who can handle that kind of high volume normally, who then needs to drop that much volume to get the most from the 20-rep squats, gives you an indication of the effort this guy is putting into those 20 reps and what those 20 reps take from you as far as recovery ability. As martial artists who train mostly for aerobic and anaerobic conditioning it will be next to impossible to have the best of both worlds if you try 20-rep squats. Something, whether it be your martial arts or 20-rep squatting, will have to be sacrificed to an extent. To do 20-rep squats with the proper intensity and focus required, as stated in Super Squats, would require you to halt your other activities greatly, maybe even entirely. I mean, look what 20-reps do to this guy and he only does them once per week. This is the kind of tenacity that's required to truly gain all of the benefits from 20-rep squats. If you can do 20-rep squats and the next night you can go roll with someone for an hour then you're not working hard enough on the squats.
But there's nothing necessarily wrong with that. What it comes down to is that you'll have to answer some questions for yourself and determine how much emphasis and priority to place on the various physical activities in your life. And those priorities can change over time so it's good to re-evaluate now and then. You can excel at both, even at the same time, but you're results will be more slowly coming than if you could focus total attention on one at a time. Yeah, human limitations suck.
BC.
BC.