This is very irresponsible.You may get away with it once, maybe 100 times, but trust me, you are going to end up with a severely injured, named, or dead bearded dragon eventually. It could be today, tomorrow, or next year. That's the point, not whether "it worked" or not, lol, it didn't "work", you simply got lucky.
It's not at all about "trusting" your cat...It's a cat buddy. It might be an excellent, well-behaved cat. But it's a cat regardless, and as a cat owner you have to know that they are naturally born hunters. It's not about "trusting" a cat, you cannot actually "trust" a cat, as they don't think in terms of "oh, I really want to chase down that lizard and bat him around with my claws, but I won't because I'm not supposed to do that, he trusts me not to"...They aren't that high-functioning, unfortunately. It will happen, just remember we're telling you this now and warning you to not be a completely irresponsible bearded dragon owner, because your beardie doesn't deserve this behavior from you, he deserves to be protected by you.
And you also need to remember the fact that ALL CATS HAVE A BACTERIA IN THEIR SALIVA THAT IS LETHAL TO BEARDED DRAGONS, IT KILLS THEM SLOWLY BY CAUSING A HORRIBLE INFECTION. AND IT'S ALL OVER THEIR PAWS AT ANY GIVEN TIME BECAUSE THEY LICK THEIR PAWS CONSTANTLY. SO ONE LITTLE PAT OF YOUR BEARDIE BY YOUR CAT'S PAW CAN LITERALLY KILL HIM, IT HAPPENS EVERY DAY. THAT'S WHY THIS IS MIST IRRESPONSIBLE.