I want to put this vise on the end of the Roubo-inspired bench I'm building. The plate has 4 screw holes so you can secure it up from the bottom of the bench. I've noticed almost all end vises are mounted on an end cap that's either dovetailed or lag bolted on. I assume this is so the vise doesn't pull itself out of the end grain of the benchtop? Oddly I've found zero documentation on end caps, people just use them without ever mentioning their details very much. Frustrating.
Anyway, on to my question: Is it a bad idea to just lag bolt this vise into the end of the bench without a cap? Is this something that will realistically pull itself out with hobbyist use? It won't get super heavy use nor will I be cranking on it.
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Anything helps. Thanks.