I use a touring bike for commuting, it's not really the best choice in my opinion. The weight is overkill and the handling is not ideal. That said, I do it every day and it's certainly not impossible.

Consider a cross bike, or a practical road bike (like a Pacer) or even a rigid mountain bike with appropriate tires and braze-ons - if your commute isn't super long.

It really depends on what your commute looks like, though.