I use it, have had it in the M for 6k miles now. Will put another 1k on the car, then send the oil to Blackstone Lab. Will report back afterwards.
Current: 2008 BMW M3 Sparkling Graphite/Bamboo Beige/6MT. 1999 BMW M3 Techno Violet/Dove/5MT. 2007 BMW Z4MR Alpine White/Imola Red/6MT