MS coast
"Electronic hole card readers or the older peek mirrors are pretty much universal now. Very few casinos anywhere in the U.S. still have the dealers actually look at the hole card in the traditional manner."
I was really only talking about the electronic version. Most casinos I have been in (including Vegas) still use the mirror rather than the electronic scanner. The only problem with the electronic version seems to be reliability. On the last night at the Beau, I played at a $25 table and the scanner had masking tape over it. Dealer had to "peek" the old-fashioned way. I've heard others remark about this but that was the first I had seen. The "mirror" doesn't fail. But either the scanner gets dirty or the buttons break, I have no idea which, some small percentage of the time. Only down-side to this was that a pit boss stuck pretty close to our table making sure the various dealers were not flashing 3rd base unintentionally (or intentionally I suppose).
As far as the H17 vs S17 goes, I was down there about 3 weeks ago, and I played at 4 places. Beau (H17/S17 as I said, but H17 was the majority option), Grand. (same as far as I recall). IP where my son and I played a little "teamwork". I would be hard-pressed to remember exactly what the ratio of H17 to S17 was, I don't recall. I do remember that on the $5 table (that was his choice) we played H17. At BoomTown my brother talked me into playing a new game called something like Big Bet holdem, two cards per player, 3 community cards, dealer gets 3 cards with one exposed. players make two bets (one big one small) etc... So I really didn't check out boomtown carefully that trip, but the trip before it also had plenty of H17 tables which I try to avoid.
I did not visit the casinos east of the Grand (Casino Magic, Capri, etc) this trip but the last trip I also saw plenty of H17 tables. I have not seen any CSMs at all, personally. When we talk about the "Grand" I assume we are talking about the same place, on hiway 90 a mile east of the Beau? I have seen CSMs in the past, but nothing in the past 3 months that I recall. As I said, I only saw one auto shuffler in BJ. The 3-card this and that seem to use an auto-shuffler/auto-dealer still. (ie 3-card poker which I refuse to play although my brother and his wife love to offer up the casino a great profit in that game. :) )
I will also admit that I do not carefully watch for ASMs since they seem to be neutral to the game other than speeding it up, good for me, bad for the pure BS (and worse) players. I've been down maybe 6 times in the past 4 months, never encountered a CSM at all, and I usually walk thru the entire pit area trying to locate the S17 vs H17 tables first to avoid that .20% penalty.