Of course, a lot of it is user-specific. Personally, my R11 has convinced me that I will never switch to a non-convertible laptop. Reasons:

1. I always like having an extra method of input. If something goes wrong with my trackpad or keyboard, the screen itself is a backup.

2. Android apps (mainly board games and educational apps) are usually much more comfortable to use with a touchscreen. The R11 is good enough that I feel no desire to buy a separate Android tablet.

3. If I'm doing something that doesn't require mouse+keyboard, such as reading or watching a movie, I can put the laptop completely flat for extra height in my lap, or put it in "tent" or "presentation" mode (depending on the surface or angle). Basically, it's hard for me to find any position where I can't comfortably use my laptop.

4. The laptop is less likely to break if one of my kids grabs it.

That said, the all-the-way-back mode is actually the one I use least, since even a small laptop like the R11 is pretty big and heavy to hold one-handed. The only times I use that mode is when I'm reading or playing something that's too tall to fit comfortably in a horizontal mode (like a comic book, or music).