If everything you have read is saying that it is fine, then why does it not feel right for you? Looking around I do get the same impression, it is non-combustible so there is not really a concern there. Basically from what I gather as long as you use the proper wire for use in walls/isolation, leave enough space and generally take good practices in account like using conduit where needed you should be good to go.

I am not an electrician though and certainly not aware of your local code and regulations.

Talking about electricians, if you are worried about doing it not right, why not hire one to do it for you?