I've driven in snow and ice for decades, and constant wheel speed is always best. Always. Especially when you have a clutch and enough torque to maintain wheel speed (no fast, just constant, allowing some slippage). I want to permanently disable mine. I traded my USB cable I bought for my JSW... am waiting for my Hex-Can cable now, and I'll dig around for a solution.
I also like to be able to accelerate with some slippage without experiencing the power off/power on crap. If it means disabling the antilock sensors, and won't prevent it from running, I'll gleefully cut the wires. Hopefully, there will be a way to do it in the VAG-COM.
Now. Someone that knows tell me it can't be done with VAG-COM...