I just directed a CCA event this past weekend, which used the 10 second delay (40/110, SD/30 +10s delay was the main time control) and was my first experience with it. Here are the settings I used for clocks I programmed:
Chronos: Used the DL-SD2, without a move counter. I wanted to find a setting that showed the delay countdown but either it doesn’t have one or apparently I don’t know the clock well enough to do so. People managed with the setting I chose.
Chronos Mini: Used TN-2 and liked that the delay countdown was shown numerically as oppose to just flashing dashes like on the bigger Chronos.
Analog : The one or two analog clocks in use were not given any extra time to compensate for the delay. I also had one game where the players didn’t add or subtract (I prefer them to add so I know they are in the 2nd time control) the 30 minutes after move 40 and so theoretically the flag would have fallen at 6:30.
Excalibur: I set these using a user defined mode but it took a couple of minutes per clock to set up. I also set them with the move counter as I ran into an issue with a clock that I tried setting without the move counter where it didn’t add the 30 minutes when the flag fell. Once bitten, twice shy.
Saitek Competition (Blue): Used 2D, which worked well. The only things I don’t like is that when you are programming it, the message says “time added” instead of delay. It doesn’t add extra time, e.g. increment, it is indeed a delay. I also don’t like the display switching completely over to the delay countdown before it switches back to the main time you have remaining.
Saitek Pro (Grey): Used 7A and programmed it manually. Also see notes for Saitek Competition above.
DGT NA: Used preset 23 and manually programmed time control.
DGT 2010: Used preset 25 and manually programmed time control.
DGT XL: Used 00 and manually programmed time control. This clock used Bronstein mode and in both the games where this clock was used there was an issue with one of the players not understanding how Bronstein worked the delay and they thought the clock was not doing it correctly.
DGT Easy Game Time (and Pro version): This clock can only do one time control but when it is the only thing the players had I let them use it and was planning to make an adjustment on move 41. However, that issue was never brought to my attention and it was only seen in the lowest section.
ZMF II: Never had seen one of these before and so when I was asked to set it I couldn’t figure it out. I asked the player if he had a manual and amazingly he was able to produce one after a couple of minutes. It took a little working out, even with the manual, but eventually I was able to get this to produce the time control for the event with the 10 second delay.
There were various questions throughout the event as to why 30 minutes wasn’t added automatically after black’s 40th move. This, of course, was always related to clocks set without move counters and so folks were happy with a brief explanation and cheerfully watched their clocks get to zero then add the 30 minutes.
In terms of the 10 second delay, I personally received no complaints about the use of it and just a handful of questions as to why a 10 second delay was used instead of the usual 5 second delay. I directed all those folks to contact the organizer (sorry Bill!).