I get ya, what works for you is best, i used to put my phone in my shirt pocket a lot too but too many times i would lean over to do something/pick up something and then hear it hit the floor just as i straightened up.

Another trick i like is to wear those wired 'ear bud' style headphones that come with my phone and run the cord down my shirt along my back and into phone in pants pocket. The earbuds fit under ear muffs and dont dangle in front of me when using tools as they can only hang about 10cm in front of my face if they fall out, and to answer a call i just squeeze the button on the cord and the mic seems to pick me up fine for a quick call and keep working.