The one for my application looks like Hengst, right down to the 6 holes and stamped "20" in the base plate. I have two of the Hengst in stock already, and no cutter (on purpose).
Seen torn media regardless if the center tube has holes, louvers or is an eCore. Doesn't make any difference. How the media pleats are spaced, and how weak the media is when stressed is what can cause media to tear.