I agree that switching is a pain in the ass. It will make you essentially unable to type for about 2-4 weeks.
Ctrl-C/V/X is a valid concern. I fixed it by mapping mouse buttons to copy/paste, and also getting an Advantage2 Kinesis into which I've programming custom keybinding for Undo/Redo/Copy/Cut/Paste.
I can still touch type qwerty and often do at work on co-workers' keyboards. I'm pretty slow though, about 40wpm (100 on dvorak), and I usually have to look at the keyboard.
I also use qwerty on my phone - I tried dvorak and also found it to be a hindrance there. That makes sense, since dvorak is designed specifically for ten-fingered typing.
The primary benefit that the author of this post completely overlooked is comfort. It just feels... easy and comfortable, in a way that Qwerty doesn't even come close to. Whenever I am forced to type Qwerty I feel like I am doing finger calisthenics. It's tiring. My wrists never hurt after full days of typing, and I'm hopeful that the reduced motion and strain will help me avoid carpal tunnel or other hand/finger issues.
I plan to spend my entire career and much of my free time in front of a computer. Why on earth would I subject myself to anything less than the best interface system possible? That would be like a professional chef using the $20 knife block from the grocery store, or your doctor using WebMD to try and diagnose you.