A double wrap on any stem will increase stability, sometimes at the expense of move-ability that a more experienced climber will be doing, unbeknownst to the climber (micro adjustments with a little hip-shimmy.
I find fir bark to be more dependable than pondo pine bark, which is our most common larger pine.
A little hip thrust in toward the bole will allow a climber to grab both parts of the 540 wrap and flip up the tree pretty normally, except perhaps they will run a bit more slack in their flipline.
This is good fall arrest if you are change in your climbing system on a smooth bole. It works on slick/ smooth bark, like our madrone, too. Leaning stems, like our madrone, useful, too.