We were officially requested by PSL to stop using it last year.
If i was bothered about the "perceived significance" of the site or wanting to be self important, I'd stop allowing things like avatars and sigs on the site as well, since just about every second one (my own included) is a copyright infringement. The difference is that it's not likely to be spotted by the copyright holders. The mock ups are.
Main issue is with the kit makers logo, not necessarily the mfc badge.
This place and folk like you
Difference there is that I requested the ability to use the MFC Crest on the website and was given permission by the club.
So in short, if you folk wanna go and ask puma if they would permit you to use their logo, then feel free. If they agree to it (they won't) then I'll be more than happy to allow the mock ups to include the logo.