Here's a quick shot. The case is for the BCD436HP, but the SDS100 fits just fine. FYI, 436 is just slightly taller than the SDS100.
Yes, there are cutouts for the USB ports and the Menu & Function buttons on the other side. They line up perfectly.
Thanks budevans for your picture and information regarding using a case designed for the BCD436HP with the new SDS100.
I did a little further research as I wanted to compare the exact dimensions of the SDS100 to the BCD436HP. Unfortunately I couldn't find the exact dimensions of the SDS100 anywhere in print at this time but I was able to find the exact dimensions of the West Marine VHF470 handheld marine radio which is manufactured by Uniden and has the same form factor as the SDS100. I was also able to get the exact dimensions of the BCD436HP from the Uniden owner's manual. Here are the comparisons in inches:
West Marine VHF470 handheld marine radio (without antenna and belt clip): 6.122 High x 2.562 Wide x 1.633 Deep
Uniden BCD436HP scanner (without antenna and belt clip): 6.3 High x 2.8 Wide x 1.5 Deep
As you can see the dimensions are extremely close between the 2 radio cases. Based on those figures and the picture that budevans provided above of his BCD436HP soft leather case on his SDS100, I would say that the current cases available for the BCD436HP will more-than-likely work just fine with the new SDS100. Even with the new larger battery and battery door there should be enough "give" in both the nylon and soft leather cases to accommodate and not be a problem. The hard leather case could possibly have an issue with the larger battery/battery door as there is typically not much "give" in a hard leather case. YMMV
Please post any additional information and/or photos that you may have regarding a case for the new SDS100 scanner.