If you used TWS more than a year, you might remember the
bandwidth issues we had last year.
At the time, many quote seeking peoples (I do not know whether they were customers or not) loaded up 20 pages of quotes in TWS simultaneously, and this CAUSED huge problems. This is a fact! IB might increased its bandwidth after the event, which I do not know. Anyway, IB changed TWS software so that only quotes at the current page were updating.
Do you see what I am saying? I know QT is a wonderful program. Because it is wonderful, people will try to get more quotes through QT. I had 7 page set up in TWS with each page showing 3 stocks with separate ECNs. That is, TWS is updating about 15 lines at a time. If I use QT, I would get 15 lines times 7 pages information at a time. That is instant 7 fold increase of bandwidth consumption.
How about you? You would get LII like screen if QT allows, right?
This is the reason I am concerning. Using current JTWS, we do not want hundreds of quotes at a time because it is inconvenient. JTWS is not well designed for quotes. However, if we use QT, a great program, then ... guess what will happen. Multiply that to non-customers who suddenly saw great free quotes from direct ECNs and exchanges.
If IB has enough bandwidth this may not be the problem. Well, it could be a problem only in one day a year when the market is really tanking...
In my opinion, I just do not like the idea. You can wish or pursue whatever you want. Just be careful, You might get what you want.