I’m trying to do the same thing with Jigoshop as I prefer it to Woocommerce.It’s not a trivial task as it involves finding one’s way around some parts of the innards of Mantra and parts of Jigoshop.
I have also posted a request for help on this in this forum but looking at the history of responses, I think it unlikely either of us will get one (apart from me replying to you, that is 🙂 )
Once I have got this working – and it’s looking like around 2 weeks work – I may well sell it or just release it (it’s a WP child theme). I have no choice I have to make this work, as I have 4 websites waiting to use it and some of them I get paid for.
Oh, and I have contributed (and done the pitchin, too).
Mantras is great… which is why I am using it for so many things 🙂