There’s some argument that the rear doesn’t necessarily benefit from a bolt through if the frame is good enough. That was Santa Cruz’s argument even with the Mk2 Nomad. Though interestingly with the Bronson and the new Nomad 650b… bolt through on them 😉
Personally with my Mk2 Nomad though I can’t see I’d notice the slightest difference in stiffness or whatever, and the wheel is thoroughly secure if done up right.
But can depend on the frame and what you’re riding. Pure DH, I’d be going bolt through.
p.s. There’s an option of a bolt through like with the DT Swiss RWS Thru Bolt. It’s not really a bolt through in that it doesn’t bolt to the frame, but it’s a QR which you can get it in 10mm, works with a 10mm bolt through hub and does up in a slightly different way to a regular QR skewer. Looks nice and like a bolt through. Whether it makes it any better is another matter.