Great review, thanks for posting.
Unfortunately, I see this as a stellar lens I'll never use. Large aperture glass simply has to have AF in my hands or the value of that huge opening is lost on anything I shoot that is moving (even slowly). I'd end up stopping it down just to avoid missing with manual focusing.
As such, I'd only opt for an MF lens if it were on a tripod for landscape work. And as much as 135mm certainly has a place in landscape work, it's not a focal length I reach for enough to justify $2k out of pocket.
So I flag stellar lenses like these in the 'win the lottery / when-I-retire bucket': magical, but not a priority for what I shoot. Keep in mind that I am an enthusiast who has only grown up on having AF on everything I've shot -- pros or folks with significant rangefinder / MF lens experience may be able to net a high percentage of keepers with it.
Well put. Lenses like this are perfect for those who have the disposal income to get the best and then use it in the more leisurely fashion that it deserves. It will highly reward those that take some time with it, but the real world precludes always having such time or opportunity.