Can I use pin-held V-Brake inserts in (cantilever) screw-held Shimano M Type brake pad holders? I have 1990s Shiman Deore XT cantilever brake pad holder shoes with smooth studs.  I believe these are "M Type" cartridges/inserts. The replaceable inserts slide in and are held in place by a screw / grub. They look like this:



I need to replace the replaceable inserts. However, I am having a hard time finding replacement inserts.

Is it possible to slide in "V brake" inserts that are readily available as replacement inserts?  For example, could I use the following inserts in the shoes shown above?



Or, are there any other inserts that can work with the Deore XT brake shoes that I have?  As a side note, there is corroboration  that aftermarket replacements for my brake shoes are hard or impossible to find (see here and here, e.g.).
I don't know whether the v-brake replacements fit in. However, normal cantilever brake pads are very easy to find. When you don't find a replacement insert, just order some entire brake pads. You will probably get just as good braking pads for the same price.

Edit: Perhaps ask these guys: http://sheldonbrown.com/harris/brakeshoes.html#dura.