just did Beijing > Munich > Nice, more than 11 hrs flight, 2 x kayfun minis+ 1 Russian, placed them upside down vertically during take off and landing. No leaks and not so pleasantly surprised, it is physics after all.
Also had a CE4 clearo, didn't leak but it became gurglish at the end of trip. Had tissue paper rolled up like a needle and shoved that up the bottom air hole and that took care of the excess juice causing the gurgle.
Stealth vaped throughout the flight, keeping each draws inhaled for 10 seconds, and that avoided clouding up the place.
Also had a CE4 clearo, didn't leak but it became gurglish at the end of trip. Had tissue paper rolled up like a needle and shoved that up the bottom air hole and that took care of the excess juice causing the gurgle.
Stealth vaped throughout the flight, keeping each draws inhaled for 10 seconds, and that avoided clouding up the place.