I've been meaning to post this, and keep forgetting.
I did the same progression this past Sunday, and it felt better to me. My back didn't fatigue as quickly from arching, and I felt like I was able to hold my form longer.
On a side-note, I did wear my suit this week, and had to fight against it to push my knees out, particularly my right knee. Made it a little tougher, but I think the pratice with the suit is worthwhile.
We did Zercher front squats as a second move, and I really felt those in my glutes, hams, and hips. I hit 225 for a triple, but it became more of a squat/gm combo.
Spatts did notice something interesting, and we may need to do a video of this just so everyone can see it...it seems that when I squat, it's like I squat to the left. I'm sure she can explain it better than I can, but I raise and lower myself at an angle. I suspect this is another one of those things that goes back to the slight spinal curvature, but I don't know. Anyone else ever seen someone squat at an angle?