Hi everyone. I am nearing completion on my mutant-Roubo workbench build and have a question regarding attaching the end cap to the top. The end cap will be purely decorative and on the left side of the bench (the side with the leg vise). The reason for this is that I will not be attaching a tail vise, and will have a quick release vise mortised into the right end of the top.

Seeing as how the end caps will be decorative and not face the stresses of a tail vise, would it be sufficient to breadboard it to the top? I will have a dovetail attaching the front and mortise and tenon joinery for the rest of the cap. I was picturing two oak pegs, one in the middle and one in an oversize hole on the back. I would prefer to avoid using bolts if possible.

Also, is wood movement likely to be an issue for a QR vise mortised into the end of the top? The bench is built out of pine.

Thanks in advance!