It may not have been your intention to copy the Kamakura collar exactly which is fine, but the Kamakura collar seems to be all around beefier than the SM one. In particular, it seems to have a wider spread, longer collar points, and a taller collar band height. One of the huge benefits of the extra spread in my opinion is that it helps the collar points sit closer to/under the lapels of a sport coat. I personally prefer this on all my collars: BD or otherwise. The SM collar looks very nice and I look forward to trying it out when they come in. Do you mind sharing the measurements on the SM collar? Thanks.
They are almost identical TBH, it's just how the shot/angle of the pic. The only small tweak we'll make before we go to production is increase the tie gap, which will push the roll out a tiny bit more.