I had an AUS 800 a year ago and I agree you will need to wait at least the 6 weeks of healing before you use the VED.
I use both and note if you don't urinate before you VED, I sometimes would have some urine in the tube .
Usually nothing major unless I needed to urinate anyway.
Best person to ask since we all are different is the URO who is putting in the AUS. He should know more about your system than we do.
Good Luck, AUS is great and VED works well for me.
Tom West Central Ohio