Once the engine warms up properly the 'stat will be fully open. Doesn't matter if it's a low temp one or an OE one, if you booting it or sitting in traffic both will behave exactly the same.
It's a bit more costly option but one of the best things you can do to a valver engine is fit an oil cooler, either a williams OE one or a MOCAL aftermarket one. Helps keeps the oil a lot cooler obviously, but also the coolent runs cooler too....