I did! Sorry for the delay. Had to speak to a few people. Unfortunately, neither would be available in The Gauntlet. We are switching away from CQG data feed for a number of reasons, one of them being that we cannot include commissions costs to make it more realistic to a live account. Since we're using Rithmic now, we do not have access to CQG apps.
Regarding XT/TT, unfortunately same sort of situation. They have their own feed and they don't connect with CQG or Rithmic backends. This makes them unavailable to Gauntlet users. That said, I've discussed with Finamark development and they said that if there is enough demand, they can create a bridge to the TT/XT API that would allow for order entry on TT/XT and have the orders sent to Finamark. This would allow for use on the Gauntlet but would be a significant development effort. If there is enough demand for this, we will look into it further!
As far as live accounts go, yes, both CQG Q/IC are available as well as XT/TT. However, the trader would still need to provide their own software license for this.
I hope this answers your questions. If not, feel free to come chat us.