Stonedust Handwraps + Charged Gauntlets

[UltraMonk2]

Did testing to confirm the following:

When using both the Stonedust Handwraps and Charged Gauntlets at the same time the 10d6 Lightning Vorpal effect does not trigger whilst the Flesh to Stone on the Handwraps does.

Taking off the Stonedust Handwraps will cause the Charged Gauntlets to start to trigger again.

Is this because both abilities are Vorpals?

Thanks!

Disclaimer: Multiple Training Dummies were severely beaten, they were intentionally harmed.