It actually looks... kinda smart looking. I haven't modelled it in, but just imagine there's 2 curved sticks maybe 5-10mm in diameter on the edges of the optics to hold them:

Ensuring that I've got >22mm of eye relief, I've angled the combiner inwards by 5 degrees so that the 55mm fresnel lens is optically centered (as apposed to a 50mm lens with very tight tolerances or an uncentred 55mm lens).

The 60mm combiners give ample space for the FOV desired, but a 55mm one might just about work too:

It's likely I'd get a bit of visual blur on the edges of the combiner, so 60mm is likely the visually better choice.

This oval visually looks more tame from the 3rd person perspective too. It looks more like a cleanroom lab guy than a disco kid.