I had training in glide approaches in the A320 Sim, as well as the CRJ, using a simple "double altitude for distance" formula on both models. You can actually get the FD to capture the LOC, while handflying the descent. Works well.
In my 7 years on the A340 we never did this, but as it only flies by a little device called the "Improbability drive", one doesn't need it anyways.
Nic
PS: There is no actual guage, but a digital way to get the read-out of the AOA-probes on the CRJ. I have been watching the numbers, but as flightschool is so long gone and I never learned how to fly on the AOAs, I would be happy if any of you guys could give me some explanation or point me to some reading to enable me to put those digits to sensible use...