Has anyone tried Propanolol for physical anxiety & stutter?

Has anyone tried Propanolol for physical anxiety & stutter? I'm just interested as my stutter greatly worsens when I'm extra anxious or nervous, and if I have too much energy, which then turns into nervous tension. I've been taking Klonopin daily for 6 years and this has reduced my stutter by about 90%. I know it's not ideal to take a benzo everyday for years, but my chronic 40 years-long anxiety necessitates it, and the positive impact on my stutter that I've had since I was 4 is a huge bonus. So I was wondering, for others whose stutter worsens when extra nervous, have you taken Propanolol (which slows the heart rate and decreases adrenaline in the body, reducing the physical effects of anxiety or nerves, like when public speaking or performing, etc), and if so, did it do anything?