Ever notice how the Photos app resembles a film negative contact sheet? I am amazed with the viewing experience from the iPad/iPhone/Mac and all the information that is built into it. My workflow is simple: Take images with the iPhone, let them sync to the cloud and they are visible on any device you want to view or edit. I can also shoot images on my digital camera, load the SD card into the reader, insert reader into my device and transfer there for post-processing.
Why do I prefer the iPad to do this with? First, the experience of viewing, choosing, and editing your photos on an iPad is much more fun and interactive than just seeing them on your laptop. I can take my digital photo lab with me everywhere. And seeing my photos on a brilliant screen is more intimate for me. I am able to hold my digital images in my hand and interact with them, flag, post-process, and even sketch the composition.