"It depends".
Different glass has different coefficients of expansion (COE). Every manufacturer has to deal with this and test the compatibility of glass before charging a tank with cullet. If the COE isn't compatible - the glass will not anneal properly and will have internal stresses which will likely cause annealing fractures. (Akro Sky Blue Onyx with Oxblood are a good example of incompatible glass....the vast majority have fractures and ended up being dumped). There are methods to test this compatibility.
The first requirement would be to test for compatibility between the Jabo glasses and each individual Akro cullet sample (all Akro glass is not the same COE). I would think that it would require a lot of Akro cullet - more than I'm guessing is lying around. Someone else might know the minimum number of pounds of glass for a single color Jabo requires for a run.
The whole deal might be more easily done on a torch.