I still use the buckle tongues but I must share my favorite near-death experience involving them.
I was riding a borrowed saddle that had them, and Ariat riding shoes with pull on loops at the heel. Somehow, BOTH loops snugged themselves on to both buckle tongues. I couldnt move my feet. At all. I was completely baffled for a few seconds, then I realized what had happened. Then I started thinking, great, if this horse freaks out, if the girth isnt tight enough and the saddle rolls, I will be under the belly getting my face kicked to smithereens. (Yes, I was wearing a helmet.) I finally was able to flex my feet enough to get the loops off the tongues. It was easier to slit the loops than saw off the buckle tongues, so that’s what I did. I never rode in that saddle again, the shoes are long gone, and I’ve never had the problem with another girth or boot combination, but it sure got my attention when it happened. I think the latigo knot is safer, too.