Viper wired Thumb buttons? Help

Ive used Razer Lachesis from 2010 - 2012 (weird grip, had to replace) Steelseries sensei from 2012 - 2017 (ideal but slightly large fit for my hand) Razer lancehead bought in 2017 (thumb button issue) Zowie FK2 Middle Size 2017 - current (ideal) My zowie is having double clicking issues and I have to buy a new mouse. Im looking to buy a Viper wired, but i have concerns with the thumb button. I bought lancehead few years ago, grip was really great, but the thumb button was too small and curved up and under to use it, i had to give it to my brother. I use thumb button1 for jump, so its very critical. The thumb buttons on sensei and FK2 are perfect for me, and by looking at vipers pictures, it looks the same. But can anyone tell me how is the button really like in viper, ive seen a few reviews and they say is not too prominent to negate the right side accidental clicks.