Ok so the socket has some type of thing to steady or keep the sim card tray in place.
I think if you are very very cautious and not force anything it may be possible to put the sim into the adapter then into the SIM tray and slide it in. the SIM chip based on a video on Bell's site shows the sim placed down on the tray so to me the Sim chip needs to be placed down to make contact.
the site link
https://support.bell.ca/Mobility/Sma..._my_blackberry