Yes, thanks Tudor and Alex.
For the benefit of others reading, after talking to the technical team, my plan is to give these a go (which are obviously not Virgin products and not the responsibility of Virgin) and if we run into any issues with the functioning of these, I will pay a £25 non fault callout for an engineer to see what can be done to fix the issue and accommodate what I’m trying to achieve aesthetically. I am told they may have alternative sockets and may even be able to help install these products for me - but it’s down to the individual engineer.
The technical team were helpful but acknowledge they don’t have the specific knowledge of the engineers so weren’t able to give me any advice either way. They didn’t have any objection to me giving this a go though so I don’t believe there are any T&Cs specifically preventing me from trying to use these.