I do get a bit of drifting at high speed but it's super scary.
Tend to get understeer then a whole load of oversteer before crashing hideously.
Had one bad moment that I won't forget comuteing from work.
Dark, back lane sweeping downhill bend and came out of my seat ending up facing the wrong way.luckily I was clipped in so didn't loose my feet.
I do use my back brake for a bit of speed scrubbing but it's inherently dangerous.
I learnt to ride trikes on/ in a Pete Ross Trice, the forerunner of today's ICE trikes, what the Trice lacked in build quality , it more than made up in handling, whoa ! the times I got things wrong on it, the ultimate was coming to a Audax check in Thaxted ,Essex, I was showing off, and paid for it big time, deliberately slid the back wheel out , but hot it so wrong, went into a death toll bounced around and hit the Kerb with the front wheels.
After I got up ,and tried to ride away, I realized I had bent the main frame crucifix in 2 places, the trike wasn't straight anymore ,I had trashed it, but still managed to ride it to the finish 30 miles away, it didn't like right turns at all.
That's the main reason why I don't specify rear braking, it serves little purpose, only there for parking, to his credit,Pete Ross gave me another frame for free, his frames often failed, it finally bit the dust 2 years back when it catastrophiclly failed when it split in two.
I now have an AZUB, its much more stable, comfortable, if not as quick, but it also has no rear brake, I had learned the hard way.