Originally Posted by tjspiel

When Grant or Brent have spent a summer commuting in 90 to 100+ temps and a winter of riding in below 0 weather, I might give more credence to their advice on how to dress.

Here's my advice: Wear what works for you and ignore those that are trying to sell you on certain products or on a point of view.

Many, many people have success wearing just whatever they'd wear to work. Others prefer to wear athletic or even cycling specific clothing. Neither is "wrong".