It's not really an order type but it's extremely helpful in splitting up large orders. Of course via the API, you can let your code do it for you but I prefer something that's in the TWS.
How would you deal with large orders then?
The way it is advertised, I didn't think it was just for large orders. I thought it was more for traders. For stocks like AMZN, pcln, etc... This execution could be helpful.