This has been my main routine for well over a year. I do 2-4 weeks of accumulation (first set/rep scheme) and then 2-4 weeks of intensification (second set/rep scheme). First weeks of both are usually well under PR level, and I work up from there.
I had weeks of setting PRs in accumulation 3 times in a row, but also weeks where I start with accumulation phase, and after 2 weeks, before even I reach old PRs, I start feeling tired and have to back down. It had pretty much to do with me trying to diet on this approach, which I wouldn't recommend.
But, in general, when I take a look at a complete training year, it was relatively ok.
1. Back Squat 5x5 (3x3)
2. Incline Press 5x3 (1x3)
3. 1-Leg Back Ext. 3x8-10 (2x5-6)
4. Abs 3x8-10 (2x5-6)
1. RDL 5x5 or DL 8x3 (3x3)
2. Push Press 3-5x5 (2-3x3)
3. Chin-ups or Pulldown 3-4x6-10 (2x5-6)
1. Front Squat 5x3 (1x3)
2. Bench Press 5x5 (3x3)
3. Barbell or Cable Row 3x8-10 (2x5-6)