I have enabled recording and close call and can confirm that you can record close call hits and play them back later.
My HP-1 was my newest scanner before I bought my SDS100, so I sat out the 436. But from what I can tell, the UI side of the radios seem pretty comparable. I understand the SDS100 is an upgrade to the 436 with it's Software Defined Radio/Tuner and the color display, but I'll bet there is a lot of shared code between the devices.