I have run my SVT at Portland quite a number of times...I think it's turn's 4,5 and 6 that are basically 1 long right hand sweeper, and I have never seen the oil pressure drop at all.
Of course I wasn't really focused on the guage all that much, but I was glancing at it...
I run a bit more oil just in case, but has anyone actually ever seen the pressure drop??
I use mechanical guages, so maybe they don't react as fast.
mikey