I would bet that most developers who use laptops as their primary development box sometimes tether to a large screen - that is what I do in my home office. I often work in other places around the house, rather than my office, but then I tend to do tasks that don't require a large monitor.

Having your whole working life on a single laptop (with multiple types of backups) is a real convenience and time saver.

Well, seeing that you're a Starcraft player, it's not as though a laptop really would be an option ^^

More seriously, I think that your setup would hurt my eyes. Having a dedicated monitor is far nicer than using a laptop, but you have screens dominating your peripheral vision. One decent-sized screen is much nicer in my opinion.

Nice setup. I think it depends on your line of work and personal preference.