Not directly related but I've had a Remo CS Dot on both my '68 Acro and my Yamaha Paul Leim COB snares. I'll probably go back to an Aquarian or Remo coated (sans dot) on the Acro but there is something cool sounding about the CS Dot head.
I've tried more heads on the Leim model which is basically a Black Beauty knock off. I've used the Evans Reverse Dot and the Aquarian Reverse dot heads (as well as the Remo) and they all have a slightly different character to them with the Remo being the most different. My observation of the Remo's CS Dot is that it gives a great rock and pop sound. I especially like the sound when I do a rim shot off center. The dot has a light muffling effect but the area outside the dot retains the highs I like in the general timbre of the stroke. For me, it naturally produces a bit more 'honk' than if I had a straight coated head. I also like the center hit for a fatter pop sound. Tuned low to medium low it sounds great when going for that sound.Having the dampening material in the center of the drum as opposed to the edges just sounds different to my ears. I usually use Moon Gel but this combo sounds different to me.
Having said all this, I would only use Remo CS Dot on a metal drum (or at least a very ringy snare like fiberglass or acrylic ) and wouldn't try to use it for more gentle styles (jazz, acoustic, folk, etc.). I also think if you are looking for a lot of attack without a rim shot, a straight single ply coated head is the way to go.
Jim