Has anyone experimented with Canons VR dual fisheye underwater or the new 7-14 for VR180 videos underwater?

Since no one is jumping in... I have been looking into it for a while but have not (and may not) take the plunge.

The best options I have seen are a bespoke option from Sexton - who adapts the lens to the front of a Gates housing. They now have it on their website:

Sexton Products

Canon 5.2 mm Dual-Fisheye VR Adaptor: Gates V-Raptor Edition

Built for the Gates Deep Weapon Housing the Sexton Gates VR adaptor will allow professional filmmakers and hobbyists alike to take the Canon FR5.2mm F2.8L Dual Fisheye Lens and attach it to the 8K RED

I've worked with the company before and they are excellent, however I don't have a Red Weapon and so the investment to try it is a lot. Part of me is also concerned about having to crawl out of the Canon ecosystem to Red to use a VR designed by Canon. I just think the post processing may be painful.

I think one of the issues is the size of the lens - the 5.2 is 121mm across so won't fit in Nauticam N120 or Marelux. I'm also concerned about dome size even thought they are wee and fisheye.

Gates also just "released" a housing for the new BlackMagic Apple Vision VR Rig.

Gates Underwater Products

Gates Immersive Housing - any Camera, any Lens - Gates Un...

Gates Immersive Housing is a dedicated underwater imaging system designed expressly for the Blackmagic URSA Cine Immersive camera from Blackmagic Design. An integrated platform, Gates Immersive Housin

Note price for hire (upon request) and they only rent them. Plus just the camera is 30k USD.

I'd love to hear if anyone has found other solutions that may work for this.