The difference between a stock diesel and a modified gasoline car is a few hundred degrees in EGT's, guess which is higher.
The main problem is that no turbo timer/cool down period WILL boil oil in your chra. Maybe not in a few seconds, but over time. It will build up that goldish residue, eventually it will be that nasty black shit you find in a 200k d16 head. Go to a hardware store, grab a 360* caster wheel with the exposed ball bearings on it, sprinkle sand in it, then spin it. That's what your turbo's future feels like. If you can't imagine the sand as burnt oil chunks, hang yourself.
If you can, I'd suggest using the lines. Even hot, low flow coolant will do, such as the fitv head outlet and the water pipe inlet (for the iacv). You can beat it senseless, drive to a nearby parking spot and turn it off w/o ever an issue. The last guy I know who did that to an oil-cooled Garrett on a daily basis had a smoking turbo after 500 miles, which then led to a melting piston due to oil in the cylinder.