Many thanks for the ideas all, much as I like the Stoessi's Heroes one the raincoat doesn't fit what I'm after (would work if recreating Tull's 'Aqualung' cover though'). Thanks Captain Blood, the Brigade one is the best fit so far (a little beard extension work required & maybe lose the hat) - anything requiring the purchase of an entire boardgame isn't really a runner, suitable though the mini be, but thanks all the same
(Had previously been considering a couple of Crooked Dice Minis - the Sinister mystic & the Guru, both are typically nice CD work, but both would require some GS alteration to pass muster.)