Bern just e-mailed me my tracking info. I am looking forward to receiving the brush & trying it out.
I just realized the Simpsons Tulip 3 that I have actually has a 24.5/52 knot in Super, not a 22/51 like the newer ones I see listed. It looks like I should be getting my Shavemac D01 2-band brush set at 24/50 around next Monday.If anything, you may wish you had a 24/48 ratio, but the 24/50 will be fine. The loft should have nothing to do with scritchy. If the hair is scritchy, it won't matter what loft you set it, at least IMO. The D01-2 band is my preferred knot over most any other knot. It is dense and a scrubber in a good way. The D01-3 band as you mentioned is very similar to a Chubby Best or similar dense knot that feels like a cloud of badger. Your new Shavemac will be absolutely nothing like your Simpson Tulip 3 with a 22/51mm knot. It is a good thing to have variety.
With all that said, congratulations, I think you will love it!