My understanding is that you can have buffered bypass in your first and last pedals and not need separate buffer pedals. My chain currently starts with a Dunlop 535q and ends with a Strymon Blue Sky set to buffered bypass. I don't actually know what the 535's bypass is but I always assumed it was buffered. All of my other pedals are true bypass except for a Boss OS-2. The reason I ask is because I don't really know how I could "test out" a buffer pedal. I don't have a way to put one in front of my board without already having purchased it.