I also live in N. Tx. but usually only attend TNA.
Many of the larger EAC dealers (but not all) now have more and more of their higher end (over $1k) coins slabbed
Not only does this make them easier to photograph, catalog and transport, it offers additional security, gives less experienced buyers more confidence, and facilitates trades
Of course, there are still plenty of high end coppers that don't get slabbed. I was able to (carefully) hold a Chain cent last year thanks to Col. Ellsworth
There was also a seller with lots of ancients and hammered medieval coins, none slabbed
Ancients in general are rather hard to find at shows, even foreign coins are harder to find now. I deal mainly with early copper and German States coinage, so it can be a bit disheartening when the show's tables are mostly stacks of modern bullion and junk silver, or a ton of high end slabs under glass.
Not worried about the hobby dying anytime soon, I see more YN's than ever with
ANA and the local coin clubs (NETCC, FWCC, etc) report in TNA Magazine about bringing school children and their own kids to meetings and show/tell days. If you're worried about the hobby dying out, make sure you mentor, teach, or otherwise help a younger person get into the hobby. (It's amazing what you can do with a bag of beat up old late Roman bronzes or
Buffalo nickels.)
TPG's provided the means for investors to establish a stable market in rare coin trading, which pretty much ensures that coin collecting will be around for quite some time longer; that came at the cost of pricing a lot of other collectors out of the hobby, and probably contributed to some dealers going out of business by substantially increasing their overhead. (The same thing happened with vintage sports cards, something I also collected for many years.)