For some unknown reason, the MT's left peg pivot pin is riveted, so it needs to be drilled out, which is no big deal. I bought some cheap Chinese FJR pegs of e-bay, which were supplied with pivot pins and the E clips needs to hold them in place. It's a straightforward replacement.
The FJR pegs do offer a bit more comfort, but the main reason I replaced them was that the stock left peg was wearing a hole in the instep of my boot, probably from moving my foot around whilst changing gear.