I'd rather leave my car off and in gear when parked...
The Esprits before 89 did not have water cooled turbos. After 89, they all have water cooled turbos. No ball bearings though.Not sure on esprits, but turbo timers are more so used/needed for turbos that are ball bearing and dont run coolant to allow them sufficient time to cool off. As long as if you do drive it hard or long (low load off idle) just let it sit and idle for about 30 seconds it'll be fine. I think most of these cars get driven so little and serviced so much you'll be fine. Not to mention i know they arent ball bearing, just not sure about coolant lines.