You won't ruin either of these without a starter, but if the OG is over 1.060 a starter is a very good idea. Since each yeast has been selected for the style, you don't need to stress them to get the expected esters.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk