That would be incredibly fun. :lol It'll be like one of those Piccolo fights - equally matched, equally brutal, wondering who (me or my clone?) would get the upper hand. Keeping in spirit with the Piccolo thing, creating clones to "spar" with would be a fantastic way of learning new tricks and increasing my tickle-fight strength! 😀
Also, I would imagine said clone/evil twin will have the same sort of playfulness, biting wit and tease-factor as I do, so if bound and subjected to the exact same taunting that I would do in that situation, things would get rather frustrating I'd assume.