Would he be more willing to use them if you said you would use disposable liners with the cloth? All you have to do then is throw away (or flush if you can get the flushable liners) the liner rather than a whole nappy. Maybe try the stinky bin full of nappies angle too!
I don't think DF was too fussed...I don't we actually made a conscious decision to use cloth, it just kind of happened that way...my mum used cloth nappies, not sure about DF's mum, and it's just so much cheaper. I'm sure your DP is going to have a lot more 'yucky' stuff to worry about than dirty nappies over the next few years...lol