What skeptical arguments do not use induction? I haven't yet found anything which says these do not exist, so doubt that they don't. But I'm still intrigued, as SEP says that
[a] way to motivate Academic Skepticism and to clearly distinguish it from ordinary incredulity is to trace the way in which Descartes gradually expanded the realm of what was doubtful (and hence not worthy of assent) in the “First Meditation.” Descartes begins by noting that the senses have deceived him on some occasions and, in the voice of his skeptical interlocutor, he conjectures that it is never prudent to trust what occasionally misleads
Zeno may count.
But I'm especially interested in Einstein's demarcation of induction and deduction in physics. To be specific, would his "methodical, inductive" researcher alone be able to be a skeptic, in the everyday sense of proving his disbelief?