This girl you see here was painted on my A4 art journaling, a journal with sketching paper from Derwent, who still takes water very well. 110lbs/ 165grm is more than OK for me, because I gesson my pages most of the time, and even if I don't it's still OK. And when you build layer after layer, even better!
And after using the paper stencils once or twice, you can create collages in your art journal. Imagine this stencil on a complementary color background! Just lovely!