Ordered on a few days ago. I see here it's getting good reviews. http://www.joeboboutfitters.com/Springfield_XDs_45ACP_7rd_Extended_Magazine_XDS500_p/xd-s50071.htm
Here's the 7 rd mag for the XDs, it came with 2 sleeves for the 2 backstraps that are supplied. Shown with supplied mag holder and additional pinky extensions. So now it's 1 in the pipe and 7 in the mag.