Here is the current 15 min chart showing a grail with sharp peaks. No divergence here, but a short would be taken . The price was 1373.00 at the time of the grail.
There are day traders here and myself, I am a long term position trader. There are no scalpers here and most likely not on much of ET. Scalping is trading for the minimum tick size or the bid/ask spread. Anything beyond that is not scalping.
To the second question, Romik is testing intraday using the 5 minute chart. The system works in any time frame though. For example , I apply it successfully to daily, weekly and monthly charts.