I would think that you might have to reprofile the tang area and maybe it will only work with older, thicker mainblades as the small blade is quite thin. But it should be doable.BTW: This is the Tech Tool, in case you are not familiar with it:https://www.knivesandtools.de/de/pt/-boker-plus-tech-tool-city-2-01bo802.htm
It should fit, though it could sit a little high and need the kick adjusting to bring the blade down. You'll need a spacer to make up the thickness to match the tang of the can opener, and you'll need to bend (krink) the blade slightly to clear the cap lifter.
Only if you bend it too far. It doesn't need much of a tweak. I grip the entire blade in soft jaws in a vice and gently bend the tang with pliers. You're only aiming for a degree or two change in angle over the whole length.
Maybe mate the pruner with the big blade in one layer and put the small blade in teh spot of the can opener, if you wish to keep it? Might be possible.