Did Ashley mention that the regular bowline was superior? I thought that was where it was from, could be wrong cause it's been years since i read him, but it would make sense because he was on the water all the time, and i think the regular one does better wet and for it's intended purposes on boats, especially in the tarred hemp of the day. The tail on the inside is probably the best when it's tarred hemp getting wet and then dry over and over again, swelling then shrinking, unloaded and shaken, dragging over other lines and obstructions both forwards and backwards, getting wet and being shock loaded, and bumping into the rigging and stuff all the time trying to loosen it and destroy the whipping causing the rope to fail. Lots of the nautical knots are designed to really go crazy with anchoring the tail because it's unloaded and likely thrashing around all the time, so having everything end in the middle helps it to be less likely to shake out. Decay of the ropes are a huge consideration back then, and so anything they could do to protect the ropes the better, and the end being hidden in the middle would protect the end the best, and so would be considered good seamanship.