Tough Books are not actually new, they have been around for years and sold to the military and companies that really need hard wearing laptops. The ones advertised now are just an updated version. The system itself is not all that different from a normal laptop, it's just in a durable case. If anything the toughbook laptops I have used are worse spec than a normal laptop, because the case is quite thick, but the laptop is normal sized, so the internal space suffers. Plus parts are alot more expensive than normal.

If you need a toughbook, then ok, buy one. But if you just want one because they look cool then stay clear of them...you WILL regret it.