I've tried both.
The lone time I shaved my pubes, I got all done and looked at it, and thought, "Oh yeah, now I remember. That's what it looked like when I was 12 and couldn't wait to sprout hair and look like a grown-up." That was the end of that.
Shaving by the backdoor however, while appreciably a more awkward task, does indeed have a practical benefit. It leaves you feeling cleaner in that area than you have since childhood. And if you hope for your partner to orally please you in that arena, he'll probably be all the more grateful not to encounter a gorilla salad.