It's kind of awkward at first. I have my index finger in the bottom of the finger print sensor and I'm balancing the bottom edge of the phone on my pinky finger (knuckle of pinky finger is in USB port). Fingers are somewhat splayed out a bit.
This is unbelievable, I'm glide typing with very few mistakes!There is the feeling that the phone may drop out of my hand, though.
I guess my advice is that the 2 XL is a bit too big, but then again I'm not accustomed to one-handed typing. I definitely cannot reach the send icon in Tapatalk.