A slacker bike with more trail will have a longer front Centre and wheelbase(all else being equal). So you don’t need extra reach to create a long wheeelbase for stability. The same goes for over the bars, the front wheel is already further out in front, so OTB is less likely, even with a shorter reach.
Finally, the longer front center reduces weight on the front wheel, compared to a bike with the same rear center and reach, but steeper head angle.
I have the 24x2.8 Vee crown gem on my 8 year old’s Riprock 24, and they are tubeless. Set up just fine. I used them for winter, since the knobs where (just) big enough to screw Gripstuds into.
Their website says the skinwall version is not tubeless though, which is to bad, as Id like to get a 2.6 for the rear of her bike for summer (front suspension bike with DHF on the front wheel). The only 2.6 I can find is the skinwall, but maybe the 2.6 in regular casing will come onto the market in a bit, since they are listed as “new’.
It could also be worth trying to convert the 2.6 skinwall, using plenty of sealant. It worked on the stock High roller 2.8 on that bike.