While the strategy seems intersting on paper, in real trading, I dont believe it will survive on long run. Reasoning is simple, this strategy works best in strong trending markets where we have one way swings.
When we come to even a bit of choppy markets, this method will be reversing multiple times, In contrast, Saints Mini Flow method reverses trend only when its really changing. Though the SAR there are sometimes higher, its well acceptable since one is looking to reverse the position and for that one needs to be certain that the trend has really changed.
Instead of SAR, if this method is used for trailing stop, it might work better since just because Nifty has come down by 37 points does not have to mean that the trend has reversed in any time frame.
I am not sure how backtests are being done, but it will be necessary to consider considerable slippage that happens during reversals.