264 Sqdn (SAS) Royal Corps of Signals cap/beret badge

[MattH]

Hi all,
First of all, please forgive my ignorance in this area.
I have been searching for some time for information on the beret badge worn by 264 (SAS) Squadron Royal Corps of Signals. I keep reading the same text in various places that the unit is allowed to wear the beige/sand beret of the SAS, but it then always says "with the CAP badge of the RCS".
I'm struggling a bit because the usual cap badge is metal. I was under the impression that the SAS always used cloth badges.
To that end I have three versions of the Jimmy...
1 Metal "cap" badge.
1 cloth badge with sand/beige background
1 cloth badge with black background

I am sure the answer is common knowledge but the information I've read so far appears contradictory. Can someone please help me out?

Warm regards,

Matt