I've never had a leak doing this. Not using enough rayon, yes.Yep, poking that hole works great to allow air to easily enter the tank. Lots of bubbles after ever pull or two but unfortunately laying the atty on it's side is not an option after pokey pokey...you get leaky leaky.
I keep a Limitless Plus in my pocket almost all day every day. Never leaks.
I also fall asleep with all my attys and I never have a wet spot on my chest.