Before going on a recent trip, I adjusted my sketching kit quite a bit to have a supporting board and carry just a few pieces of paper with me. There were three reasons:
one - I was expecting some rain and I did not want to get my whole sketchbook wet.
two - a few pages are always lighter than a whole 8.5 x 11 sketchbook of 80 pages.
three - my current sketchbook has wonderful craft paper in it and I love it - but I crave some white for my watercolors often :)
Below are experimental sketches done outside with the new plein-air set-up - I like it so far!