I am not technically sure what I use, I'm guessing the Rabbath is closest to it but I have never looked at it so am not sure. My teacher studied with Garry Karr and I use 1 finger per semitone. There is a very slight pivot going on, but if I want to I can do F to G sharp on the E string (one of the Enigma variations - I cannot remember which one, it has been a long time!) without pivoting. I got some very odd looks from other bass tutors when I went to youth orchestras outside my county, but my intonation has always been rock solid. I must admit I feel that it is more about knowing the fingerboard than a set finger pattern. When I am feeling lazy or my chops are down I will do octaves and 5ths using fingers 1- 4, but if I am doing stuff that is fast and tricky then it is 1234 all the way. The lack of shifting always struck me as being a more stable way of playing. Having said that, Simandl is used very widely and everyone seems to be very happy with what they are doing.
For me it is more about knowing where the note is and which finger is closest.