I had dinner the other night with two cuemakers, one of whom is a dealer as well and he has had and sold many SW cues. One of the many questions I asked him was if the average buyer waiting for a SW cue, basically with no special connection, could expect a superlative pair of shafts. The answer was that SW tries very hard to supply their cues with great shafts. They buy only the highest grade dowels from the best supplier who flies under the radar. Generally their shafts are first rate if not world class. This info came with a caveat that NOT ALL their cues have great shafts however. Not all SW cues come with a hi-tone matched pair of 4 oz shafts. In general they supply top quality shafts. The bottom line is though, you are responsible to grade and judge your shafts on arrival. Any disatisfaction should be made known to Laurie when you take delivery.
I personally couldn't imagine spending $2000+ on a custom cue and using an aftermarket shaft, but some people are convinced that they are superior. Each to his own...Tom